County Composition of Metropolitan Areas, 1900-1930

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CODE METAREA 1900 1910 1920 1930
0040 Abilene, TX
0080 Akron, OH Summit Summit Summit
0120 Albany, GA
0160 Albany-Schnectady-Troy, NY Albany Albany Albany Albany
Rensselaer Rensselaer Rensselaer Rensselaer
Schenectady Schenectady Schenectady Schenectady
0200 Albuquerque, NM
0220 Alexandria, LA
0240 Allentown-Bethelehem-Easton, PA/MA Lehigh Lehigh Lehigh
Northampton Northampton Northampton
0280 Altoona, PA Blair Blair Blair
0320 Amarillo, TX
0380 Anchorage, AK
0400 Anderson, IN
0440 Ann Arbor, MI
0450 Anniston, AL
0460 Appleton-Oshkosh-Neenah, WI
0480 Asheville, NC Buncombe
0500 Athens, GA
0520 Atlanta, GA De Kalb De Kalb De Kalb De Kalb
Fulton Fulton Fulton Fulton
0560 Atlantic City, NJ Atlantic Atlantic
0600 Augusta-Aiken, GA/SC Richmond, GA Richmond, GA
0640 Austin, TX Travis

CODE METAREA 1900 1910 1920 1930
0680 Bakersfield, CA
0720 Baltimore, MD # Baltimore Baltimore Baltimore Baltimore
Baltimore City * Baltimore City * Baltimore City * Baltimore City *
0730 Bangor, ME
0760 Baton Rouge, LA
0780 Battle Creek, MI
0840 Beaumont-Port Arthur-Orange, TX Jefferson
0860 Bellingham, WA
0870 Benton Harbor, MI
0880 Billings, MT
0920 Biloxi-Gulfport, MS
0960 Binghamton, NY Broome Broome
1000 Birmingham, AL Jefferson Jefferson Jefferson
1010 Bismark, ND
1020 Bloomington, IN
1040 Bloomington-Normal, IL
1080 Boise City, ID
1120 Boston, MA # Essex Essex Essex Essex
Middlesex Middlesex Middlesex Middlesex
Norfolk Norfolk Norfolk Norfolk
Suffolk Suffolk Suffolk Suffolk
1121 Lawrence-Haverhill, MA
1122 Lowell, MA/NH
1123 Salem-Gloucester, MA
1140 Bradenton, FL
1150 Bremerton, WA
1160 Bridgeport, CT Fairfield Fairfield Fairfield Fairfield

CODE METAREA 1900 1910 1920 1930
1200 Brockton, MA Plymouth Plymouth Plymouth
1240 Brownsville-Harlingen, TX
1260 Bryan-College Station, TX
1280 Buffalo, NY # Erie Erie Erie Erie
Niagara Niagara
1281 Niagara Falls, NY #
1300 Burlington, NC
1310 Burlington, VT
1320 Canton, OH Stark Stark Stark
1350 Casper, WY
1360 Cedar Rapids, IA Linn
1400 Champaign-Urbana-Rantoul, IL
1440 Charleston, SC Charleston Charleston Charleston Charleston
1480 Charleston, WV Kanawha
1520 Charlotte-Gaston-Rock Hill, NC/SC Mecklenburg, NC
1521 Rock Hill, SC
1540 Charlottesville, VA
1560 Chattanooga, TN/GA Walker, GA Hamilton
Walker, GA
1580 Cheyenne, WI
1600 Chicago, IL Cook Cook Cook Cook
DuPage DuPage DuPage DuPage
Lake Lake Lake, IL Lake, IL
Lake, IN Lake, IN
1601 Aurora-Elgin, IL
1602 Gary-Hammond, IN #;

CODE METAREA 1900 1910 1920 1930
1603 Joliet, IL
1604 Lake, IL
1620 Chico, CA
1640 Cincinatti-Hamilton, OH/KY/IN Hamilton Hamilton Hamilton Hamilton
Campbell, KY Campbell, KY Campbell, KY Campbell, KY
Kenton, KY Kenton, KY Kenton, KY Kenton, KY
1660 Clarksville-Hopkinsville, KY/IN
1680 Cleveland, OH Cuyahoga Cuyahoga Cuyahoga Cuyahoga
Lake
1720 Colorado Springs, CO
1740 Columbia, MO
1760 Columbia, SC Richland
1800 Columbus, GA/AL
1840 Columbus, OH Franklin Franklin Franklin Franklin
1880 Corpus Christi, TX
1900 Cumberland, MD/WV
1920 Dallas, TX Dallas Dallas Dallas
1921 Fort Worth-Arlington, TX Tarrant Tarrant Tarrant
1930 Danbury, CT
1950 Danville, VA
1960 Davenport-Moline-Rock Island, IA/IL Rock Island Rock Island
Scott, IA Scott, IA
2000 Dayton-Springfield, OH # Montgomery Montgomery Montgomery Montgomery
2001 Springfield, OH # Clark Clark
2020 Daytona Beach, FL

CODE METAREA 1900 1910 1920 1930
2030 Decatur, AL
2040 Decatur, IL Macon
2080 Denver, CO # Arapahoe Denver Denver Arapahoe
Denver
Jefferson
2081 Boulder-Longmont, CO #
2120 Des Moines, IA Polk Polk Polk Polk
2160 Detroit, MI Wayne Wayne Wayne MaComb
Oakland
Wayne
2180 Dothan, AL
2200 Dubuque, IA
2240 Duluth-Superior, MN/WI St. Louis St. Louis St. Louis St. Louis
Douglas, WI Douglas, WI Douglas, WI Douglas, WI
2290 Eau Claire, WI
2310 El Paso, TX El Paso El Paso
2320 Elkhart-Goshen, IN
2330 Elmira, NY
2340 Enid, OK
2360 Erie, PA Erie Erie Erie Erie
2400 Eugene-Springfield, OR
2440 Evansville, IN/KY Vanderburgh Vanderburgh Vanderburgh Vanderburgh
2520 Fargo-Moorhead, ND/MN
2560 Fayetteville, NC
2580 Fayetteville-Springdale, AR
2600 Fitchburg-Leominster, MA
2640 Flint, MI Genesee Genesee
2650 Florence, AL
2660 Florence, SC
2670 Fort Collin-Loveland, CO
2680 Fort Lauderdale- Hollywood-Pompano Beach, FL
2700 Fort Myers-Cape Coral, FL
2710 Fort Piece, FL
2720 Fort Smith, AR/OK
2750 Fort Walton Beach, FL
2760 Fort Wayne, IN Allen Allen Allen
2840 Fresno, CA Fresno
2880 Gadsden, AL
2900 Gainesville, FL

CODE METAREA 1900 1910 1920 1930
2920 Galveston-Texas City, TX Galveston
2970 Glens Falls, NY
2990 Grand Forks, ND
3000 Grand Rapids, MI Kent Kent Kent Kent
3040 Great Falls, MT
3060 Greeley, CO
3080 Green Bay, WI
3120 Greensboro-Winston-Salem-Highpoint, NC # Guilford
3121 Winston-Salem, NC # Forsyth
3160 Greenville-Spartanburg-Anderson, SC
3161 Anderson, SC
3180 Hagerstown, MD
3200 Hamilton-Middletown, OH Butler
3240 Harrisburg-Leban-Carlisle, PA Dauphin Dauphin Cumberland Cumberland
Dauphin Dauphin
3280 Hartford, CT Hartford Hartford Hartford Hartford
3281 Bristol, CT
3282 Middletown, CT
3283 New Britian, CT
3290 Hickory-Morgantown, NC
3320 Honolulu, HI

CODE METAREA 1900 1910 1920 1930
3350 Houma, LA
3360 Houston, TX Harris Harris Harris
3361 Brazoria, TX
3400 Huntington-Ashland, WV/KY/OH Cabell Cabell
Wayne
Boyd, KY
Lawrence, OH
3440 Huntsville, AL
3480 Indianapolis, IN Marion Marion Marion Marion
3500 Iowa City, IA
3520 Jackson, MI Jackson
3560 Jackson, MS
3590 Jacksonville, FL Duval Duval Duval
3600 Jacksonville, NC
3610 Jamestown-Dunkirk, NY
3620 Janesville-Beloit, WI
3660 Johnson-Kingsport-Bristol, TN/VA
3680 Johnstown, PA Cambria Cambria Cambria
Somerset
3710 Joplin, MO
3720 Kalamazoo, MI Kalamazoo
3740 Kankakee, IL
3760 Kansas City, MO/KS Jackson Jackson Jackson Jackson
Wyandotte, KS Wyandotte, KS Wyandotte, KS Wyandotte, KS

CODE METAREA 1900 1910 1920 1930
3800 Kenosha, WI Kenosha
3810 Kileen-Temple, TX
3840 Knoxville, TN Knox Knox
3850 Kokomo, IN
3870 La Crosse, WI
3880 Lafayette, LA
3920 Lafayette, IN
3960 Lake Charles, LA
3980 Lakeland-Winter Haven, FL
4000 Lancaster, PA Lancaster Lancaster
4040 Lansing-East Lansing, MI Ingham Ingham
4080 Laredo, TX
4100 Las Cruces, NM
4120 Las Vegas, NV
4150 Lawrence, KS
4200 Lawton, OK
4240 Lewiston-Auburn, ME
4280 Lexington-Fayette, KY
4320 Lima, OH
4360 Lincoln, NE Lancaster Lancaster Lancaster Lancaster
4400 Little Rock-North Little Rock, AK Pulaski Pulaski
4410 Longbranch-Asbury Park, NJ
4420 Longview-Marshall, TX
4440 Lorain-Elyria, OH
4480 Los Angeles-Long Beach, CA # Los Angeles Los Angeles Los Angeles Los Angeles
Orange

CODE METAREA 1900 1910 1920 1930
4481 Anaheim-Santa Ana, CA
4520 Louisville, KY/IN Jefferson Jefferson Jefferson Jefferson
Clark, IN Clark, IN Clark, IN Clark, IN
Floyd, IN Floyd, IN Floyd, IN Floyd, IN
4600 Lubbock, TX
4640 Lynchburg, VA
4680 Macon, GA Bibb Bibb
4720 Madison, WI Dane
4760 Manchester, NH Hillsborough Hillsborough Hillsborough Hillsborough
4800 Mansfield, OH
4880 McAllen-Edinburg-Mission, TX
4890 Medford-Ashland, OR
4900 Melbourn-Titusville, FL
4920 Memphis, TN/AR/MS Shelby Shelby Shelby Shelby
4940 Merced, CA
5000 Miami, FL Dade
5040 Midland, TX
5080 Milwaukee-Waukesha, W Milwaukee Milwaukee Milwaukee Milwaukee
5120 Minneapolis-St. Paul, MN Hennepin Hennepin Hennepin Hennepin
Ramsey Ramsey Ramsey Ramsey
5160 Mobile, AL Mobile Mobile Mobile
5170 Modesto, CA
5190 Monmouth-Ocean, NJ
5200 Monroe, LA
5240 Montgomery, AL Montgomery
5280 Muncie, IN
5320 Muskegon, MI

CODE METAREA 1900 1910 1920 1930
5340 Naples, FL
5350 Nashua, NH
5360 Nashville, TN Davidson Davidson Davidson Davidson
5400 New Bedford, MA Bristol Bristol Bristol Bristol
5460 New Brunswick- Perth Amboy-Sayreville, NJ
5480 New Haven- Meriden, CT New Haven New Haven New Haven New Haven
5520 New London- Norwich, CT/RI
5560 New Orleans, LA Orleans Orleans Orleans Jefferson
Orleans
5600 New York, NY # Kings Kings Kings Kings
New York Nassau Nassau Nassau
Queens New York New York New York
Richmond Queens Queens Queens
Rockland Richmond Richmond Richmond
Westchester Rockland Rockland Rockland
Bergen, NJ Westchester Westchester Suffolk
Essex, NJ Bergen, NJ Bergen, NJ Westchester
Hudson, NJ Essex, NJ Essex, NJ Bergen, NJ
Middlesex, NJ Hudson, NJ Hudson, NJ Essex, NJ
Morris, NJ Middlesex, NJ Middlesex, NJ Hudson, NJ
Passaic, NJ Morris, NJ Morris, NJ Middlesex, NJ
Union, NJ Passaic, NJ Passaic, NJ Morris, NJ
Somerset, NJ Somerset, NJ Passaic, NJ
Union, NJ Union, NJ Somerset, NJ
Bronx, NY Union, NJ
Bronx, NY
5601 Nassau-Suffolk, NY

CODE METAREA 1900 1910 1920 1930
5602 Bergen/Passaic Patterson-Clifton, NJ #
5603 Jersey City, NJ
5604 Middlesex-Somerset-Hunt, NJ
5605 Newark, NJ
5640 Newark, OH
5660 Newburgh, NY
5720 Norfolk-Virginia Beach-Newport News,VA # Norfolk Norfolk Norfolk
Newport News, VA # Norfolk City * Norfolk City * Norfolk City *
Portsmouth City * Portsmouth City * Portsmouth City *
S. Norfolk City *
5760 Norwalk, CT
5790 Ocala, FL
5800 Odessa, TX
5880 Oklahoma City, OK Oklahoma Oklahoma Oklahoma
5910 Olympia, WA
5920 Omaha, NE/IA Douglas Douglas Douglas Douglas
Pottawamie, IA Pottawamie, IA
5950 Orange, NY
5960 Orlando, FL
5990 Owensboro, KY
6010 Panama City, FL
6020 Parkersburg-Marietta, WV/OH
6030 Pascagoula-Moss Point, MS

CODE METAREA 1900 1910 1920 1930
6080 Pensacola, FL
6120 Peoria, IL Peoria Peoria Peoria Peoria
Tazewell Tazewell
6160 Philadelphia, PA/NJ Delaware Delaware Bucks Bucks
Montgomery Montgomery Delaware Delaware
Philadelphia Philadelphia Montgomery Montgomery
Burlington, NJ Burlington, NJ Philadelphia Philadelphia
Camden, NJ Camden, NJ Burlington, NJ Burlington, NJ
Camden, NJ Camden, NJ
Gloucester, NJ Gloucester, NJ
6200 Phoenix-Mesa, AZ
6240 Pine Bluff, AR
6280 Pittsburgh, PA Allegheny Allegheny Allegheny Allegheny
Westmoreland Westmoreland Beaver Beaver
Westmoreland Westmoreland
6281 Beaver County, PA
6320 Pittsfield, MA
6400 Portland, ME Cumberland Cumberland Cumberland Cumberland
6440 Portland-Vancouver, OR/WA Multnomah Multnomah Multnomah Clackamas
Multnomah
6441 Vancouver, WA
6450 Portsmouth-Dover-Rochester,NH/ME
6460 Poughkeepsie, NY
6480 Providence, RI Bristol Bristol Bristol Bristol
Kent Kent Kent Kent
Providence Providence Providence Providence
6481 Fall River, MA/RI
6482 Pawtuckett, RI/MA

CODE METAREA 1900 1910 1920 1930
6520 Provo-Orem, UT
6560 Pueblo, CO Pueblo
6600 Racine, WI Racine Racine
6640 Raleigh-Durham, NC
6641 Durham, NC Durham
6660 Rapid City, SD
6680 Reading, PA Berks Berks Berks Berks
6690 Redding, CA
6720 Reno, NV
6740 Richland-Kennewick-Pasco, WA
6760 Richmond-Petersburg, VA # Chesterfield Henrico Richmond City * Chesterfield
Henrico Richmond City * Henrico
Manchester City * Richmond City *
Richmond City *
6761 Petersburg-Colonial Heights-Hopewell, VA
6780 Riverside-San Bernadino, CA #
6781 San Bernadino, CA #
6800 Roanoke, VA Roanoke Roanoke
Roanoke City * Roanoke City *
6820 Rochester, MN
6840 Rochester, NY Monroe Monroe Monroe Monroe
6880 Rockford, Il Winnebago Winnebago

CODE METAREA 1900 1910 1920 1930
6920 Sacramento, CA Sacramento Sacramento
6960 Saginaw-Bay City-Midland, MI Saginaw Saginaw Saginaw
6961 Bay City, MI
6980 St. Cloud, MN
7000 St. Joseph, MO Buchanan Buchanan Buchanan Buchanan
7040 St. Louis, MO/IL # St. Louis City * St. Louis St. Louis St. Louis
St. Clair, IL St. Louis City * St. Louis City * St. Louis City *
Madison, IL Madison, IL Madison, IL
St. Clair, IL St. Clair, IL St. Clair, IL
7080 Salem, OR
7120 Salinas-Sea Side- Monterey, CA
7140 Salisbury-Concord, NC
7160 Salt Lake City-Ogden, UT # Salt Lake Salt Lake Salt Lake Salt Lake
7161 Ogden, UT #
7200 San Angelo, TX
7240 San Antonio, TX Bexar Bexar Bexar Bexar
7320 San Diego, CA San Diego San Diego
7360 San Francisco, CA # Alameda Alameda Alameda Alameda
San Francisco Marin Contra Costa Contra Costa
San Francisco Marin Marin
San Francisco San Francisco
San Mateo San Mateo

CODE METAREA 1900 1910 1920 1930
7361 Oakland, CA
7362 Vallejo-Fairfield-Napa, CA #
7400 San Jose, CA Santa Clara
7470 Santa Barbara San Maria-Lompac, CA
7480 Santa Cruz, CA
7490 Santa Fe, NM
7500 Santa Rosa-Petaluma, CA
7510 Sarasota
7520 Savannah, GA Chatham Chatham Chatham Chatham
7560 Scranton-Wilkes-Barre-Hazleton, PA Lackawanna Lackawanna Lackawanna Lackawanna
7561 Wilkes-Barre-Hazleton, PA Luzerne Luzerne Luzerne Luzerne
7600 Seattle-Everett, WA King King King King
7610 Sharon, PA
7620 Sheboygan, WI
7640 Sherman-Denison, TX
7680 Shreveport, LA Caddo
7720 Sioux City, IA/NE Woodbury Woodbury
7760 Sioux Falls, SD
7800 South Bend, IN St. Joseph St. Joseph St. Joseph
7840 Spokane, WA Spokane Spokane Spokane
7880 Springfield, IL Sangamon Sangamon Sangamon
7920 Springfield, MO Greene

CODE METAREA 1900 1910 1920 1930
8000 Springfield-Holyoke, MA Hampden Hampden Hampden Hampden
Hampshire Hampshire Hampshire Hampshire
8040 Stamford, CT
8050 State College, PA
8080 Steubenville-Weirton, OH/WV
8120 Stockton, CA
8160 Syracuse, NY Onondaga Onondaga Onondaga Onondaga
8200 Tacoma, WA Pierce Pierce Pierce
8240 Tallahassee, FL
8280 Tampa-St. Petersburg-Clearwater, FL Hillsborough Hillsborough
8320 Terre Haute, IN Vigo Vigo Vigo
8360 Texarkana, TX/AR
8400 Toledo, OH/MI Lucas Lucas Lucas Lucas
8440 Topeka, KS Shawnee Shawnee
8480 Trenton, NJ Mercer Mercer Mercer Mercer
8520 Tucson, AZ
8560 Tulsa, OK Tulsa Tulsa
8600 Tuscaloosa, AL
8640 Tyler, TX
8680 Utica-Rome, NY Oneida Oneida Herkimer Herkimer
Oneida Oneida
8730 Ventura-Oxnard, CA
8750 Victoria, TX
8760 Vineland-Millville-Bridgetown, NJ
8780 Visalia-Tulare-Porterville, CA
8800 Waco, TX McLennan
8840 Washington DC, MD/VA/WV # Alexandria, VA Alexandria, VA Alexandria City * Alexandria City *
Alexandria City * Alexandria City * Arlington, VA Arlington, VA
Washington, DC Washington, DC Washington, DC Montgomery, MD
Prince George's, MD
Washington, DC
8880 Waterbury, CT
8920 Waterloo-Cedar Falls, IA
8940 Wausau, WI
8960 West Palm Beach- Boca Raton, FL
9000 Wheeling, WV/OH Ohio Ohio
Belmont, OH Belmont, OH
9040 Wichita, KS Sedgwick Sedgwick Sedgwick
9080 Wichita Falls, TX
9140 Williamsport, PA
9160 Wilmington, DE/NJ/MD New Castle New Castle New Castle New Castle
Salem, NJ Salem, NJ
9200 Wilmington, NC
9240 Worcester, MA Worcester Worcester Worcester Worcester

CODE METAREA 1900 1910 1920 1930
9260 Yakima, WA
9280 York, PA York
9320 Youngstown-Warren, OH Mahoning Mahoning Mahoning
Trumbull Trumbull Trumbull
9340 Yuba City, CA
9360 Yuma, AZ

Table Notes

* Independent city, not politically incorporated within a county

# City-Specific Notes

Baltimore, MD Baltimore became an independent city in the 1850s

Bergen/Passaic, NJ In 1970, Bergen and Passiac counties were included in the Patterson/Clifton, NJ metro area. Passaic County remained in the Patterson/Clifton metro in 1980 but Bergen County was defined as part of the New York metro area. In 1990, the two counties were defined as their own metro area

Boston, MA The 1940 and 1950 samples use New England County Metropolitan Areas. All other samples use towns and cities rather than counties

Boulder, CO Boulder was included in the Denver metro area in 1970 and 1980 but was a separate Primary Metro in 1990

Buffalo, NY The Census Bureau identified Niagara Falls as a Primary Metro in 1990. From 1920 to 1980 Niagara Falls is separate metropolitan area

Chicago, IL Gary-Hammond, IN is designated as a separate metropolitan area in 1970

Denver, CO In 1900 Denver was a part of Arapahoe County but annexed territory from that county and became independent by 1910. The only area meeting the criteria for metropolitan status in 1910 and 1920 was the city of Denver. Boulder was included in the Denver metropolitan area in 1970 and 1980 but was made a separate Primary Metro in 1990

Gary-Hammond, IN See Chicago, above

Greensboro-Winston Salem-Highpoint, NC Winston-Salem and Greensboro are separate metropolitan areas from 1930 to 1950 and were combined from 1970 to 1990

Los Angeles, CA San Bernardino was included in Los Angeles in 1930 but became an independent metropolitan area from 1930 through 1990

New York, NY The New York metropolitan area has substantial rearrangement of counties due to the splitting of the area into smaller Primary Metros. This causes some counties, such as Bergen, to move among multiple metro areas over the last forty years (see Bergen/Passaic, above)

Norfolk-Virginia Beach-Newport News, VA Norfolk and Portsmouth had become independent cities by 1900 and South Norfolk by 1930.

Patterson/Clifton, NJ In 1970, Bergen and Passiac counties were included in the Patterson/Clifton, NJ metro area. Passaic County remained in the Patterson/Clifton metro in 1980 but Bergen County was defined as part of the New York metro area. In 1990, the two counties were defined as their own metro area.

Richmond, VA The independent city of Manchester is included in the Richmond metropolitan area in 1900 and 1910. Richmond annexed Manchester between 1900 and 1910. Since Richmond also annexed part of Henrico County, the unannexed remainder of Henrico County failed to meet the criteria for inclusion in the metro area in 1920.

Riverside-San Bernardino, CA See Los Angeles, above.

St. Louis, MO The city of St. Louis was an independent city by 1880.

Salt Lake City, UT Ogden, UT, was a separate metropolitan area in 1940 and 1950 but was combined with Salt Lake City in 1980.

San Francisco, CA Alameda and Contra Costa counties were split from the San Francisco metropolitan area in 1990 and became the Oakland metropolitan area. Solano County was part of the San Francisco metro area in 1940 and 1950, failed to meet metro criteria in 1960, but emerged as the separate metro area of Vallejo from 1970 to 1990.

Springfield, OH Springfield was a separate metropolitan area from 1920 to 1980 but was included in the Dayton metropolitan area in 1990.

Vallejo, CA See San Francisco, above.

Washington, DC Alexandria was an independent city by 1900. Arlington County changed its name from Alexandria County between 1910 and 1920.

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