Which county has the lowest population change?

Baltimore, Maryland ranks #1 with -84,860 (2000 Decennial Census).

What are the top 5 counties by population change?

Baltimore, Maryland, Philadelphia County, Pennsylvania, Allegheny County, Pennsylvania, Wayne County, Michigan, St. Louis, Missouri.

How many counties are in this ranking?

3,122 counties qualify after filtering for population minimums and data availability. The ranking covers 2000 Decennial Census data.

How is population change measured?

Change in the number of residents from the prior decennial census (raw count, not a percentage). Source: US Census Bureau, 2000 Decennial Census.

RANKING · 2000 CENSUS · 122 SHOWN OF 3,122

Most population lost, US counties · 2000

US counties that lost the most residents from the 1990 census to 2000, by raw count of people rather than percentage.

Flip the list · Most population gained, US counties →

All statesAll rankings

SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS –

3001Lake County, FLFL456,068+58,424–

3002Bergen County, NJNJ977,026+58,738–

3003Davidson County, TNTN745,904+59,107–

3004Dane County, WIWI590,375+59,441–

3005Greenville County, SCSC583,125+59,449–

3006Clackamas County, OROR426,280+59,541–

3007Yavapai County, AZAZ252,552+59,803–

3008Webb County, TXTX281,224+59,878–

3009Tulsa County, OKOK698,782+59,958–

3010Howard County, MDMD339,183+60,514–

3011Henry County, GAGA264,922+60,600–

3012Oklahoma County, OKOK822,125+60,837–

3013Mohave County, AZAZ228,102+61,535–

3014Baltimore County, MDMD847,650+62,158–

3015Monmouth County, NJNJ651,035+62,177–

3016Anne Arundel County, MDMD603,380+62,417–

3017Marion County, ININ992,196+63,295–

3018Pinal County, AZAZ539,380+63,348–

3019Rutherford County, TNTN386,352+63,453–

3020Pasco County, FLFL674,516+63,634–

3021Marion County, FLFL442,660+64,083–

3022Richmond County, NYNY501,290+64,751–

3023Osceola County, FLFL481,718+64,765–

3024Prince William County, VAVA502,966+65,127–

3025Larimer County, COCO377,292+65,358–

3026Boulder County, COCO328,560+65,949–

3027Middlesex County, MAMA1,669,979+66,928–

3028Pinellas County, FLFL948,563+69,823–

3029Sonoma County, CACA486,444+70,392–

3030Macomb County, MIMI886,221+70,749–

3031St. Charles County, MOMO426,499+70,976–

3032Shelby County, TNTN910,226+71,142–

3033Montgomery County, PAPA877,643+71,986–

3034Prince George's County, MDMD970,374+72,247–

3035Volusia County, FLFL606,573+72,631–

3036Guilford County, NCNC562,234+73,628–

3037Kent County, MIMI675,232+73,704–

3038Hamilton County, ININ387,036+73,804–

3039Cameron County, TXTX433,946+75,107–

3040Placer County, CACA442,081+75,603–

3041Bernalillo County, NMNM667,601+76,101–

3042Stanislaus County, CACA557,719+76,475–

3043Multnomah County, OROR795,391+76,599–

3044McHenry County, ILIL317,751+76,836–

3045Brevard County, FLFL663,982+77,252–

3046Seminole County, FLFL491,884+77,667–

3047Ocean County, NJNJ673,746+77,713–

3048Middlesex County, NJNJ883,335+78,382–

3049Polk County, FLFL874,790+78,542–

3050Dakota County, MNMN457,710+80,677–

3051San Joaquin County, CACA823,815+82,970–

3052Loudoun County, VAVA449,749+83,470–

3053Hennepin County, MNMN1,284,784+83,769–

3054Ventura County, CACA830,851+84,181–

3055Washoe County, NVNV509,386+84,819–

3056Kane County, ILIL525,757+86,648–

3057Denver County, COCO740,613+87,026–

3058El Paso County, TXTX877,858+88,012–

3059Jefferson County, COCO580,451+88,626–

3060Ada County, IDID546,141+95,129–

3061Johnson County, KSKS636,906+96,032–

3062Arapahoe County, COCO673,820+96,456–

3063Suffolk County, NYNY1,546,090+97,505–

3064Adams County, COCO554,668+98,819–

3065Collier County, FLFL417,131+99,278–

3066Utah County, UTUT759,859+104,946–

3067Lee County, FLFL875,607+105,775–

3068Duval County, FLFL1,062,963+105,908–

3069Clark County, WAWA532,119+107,185–

3070Franklin County, OHOH1,361,536+107,541–

3071Williamson County, TXTX752,827+110,416–

3072Oakland County, MIMI1,288,337+110,564–

3073Montgomery County, TXTX781,194+111,567–

3074Pierce County, WAWA946,288+114,617–

3075Douglas County, COCO399,396+115,375–

3076Montgomery County, MDMD1,074,582+116,314–

3077Kern County, CACA927,068+118,168–

3078El Paso County, COCO757,040+119,915–

3079DeKalb County, GAGA774,394+120,028–

3080DuPage County, ILIL934,298+122,495–

3081Lake County, ILIL719,339+127,938–

3082Bronx County, NYNY1,406,332+128,861–

3083Fort Bend County, TXTX975,191+129,031–

3084Fresno County, CACA1,035,456+131,917–

3085Washington County, OROR611,708+133,788–

3086Snohomish County, WAWA870,656+140,382–

3087Will County, ILIL712,253+144,953–

3088Contra Costa County, CACA1,170,070+145,084–

3089Fairfax County, VAVA1,167,873+151,165–

3090Denton County, TXTX1,069,346+159,451–

3091Cobb County, GAGA793,345+160,006–

3092Alameda County, CACA1,636,630+164,559–

3093Kings County, NYNY2,653,963+164,662–

3094Hillsborough County, FLFL1,574,115+164,894–

3095Fulton County, GAGA1,098,791+167,055–

3096Salt Lake County, UTUT1,220,916+172,431–

3097Pima County, AZAZ1,074,685+176,866–

3098Sacramento County, CACA1,618,460+182,280–

3099Mecklenburg County, NCNC1,233,383+184,021–

3100Santa Clara County, CACA1,914,391+185,008–

3101Hidalgo County, TXTX921,549+185,918–

3102Wake County, NCNC1,257,235+204,466–

3103Bexar County, TXTX2,160,088+207,537–

3104Orange County, FLFL1,528,002+218,853–

3105Collin County, TXTX1,297,179+227,639–

3106King County, WAWA2,344,939+229,715–

3107Gwinnett County, GAGA1,018,099+235,538–

3108Travis County, TXTX1,389,670+235,873–

3109Palm Beach County, FLFL1,575,726+267,666–

3110Cook County, ILIL5,194,625+271,674–

3111Tarrant County, TXTX2,248,466+276,116–

3112Queens County, NYNY2,358,182+277,781–

3113San Bernardino County, CACA2,224,091+291,054–

3114San Diego County, CACA3,282,248+315,817–

3115Dallas County, TXTX2,661,397+366,089–

3116Broward County, FLFL2,013,317+367,530–

3117Riverside County, CACA2,544,916+374,974–

3118Orange County, CACA3,149,507+435,733–

3119Harris County, TXTX5,045,026+582,379–

3120Clark County, NVNV2,407,226+634,306–

3121Los Angeles County, CACA9,694,934+656,174–

3122Maricopa County, AZAZ4,689,558+950,048–

SHOWING 3,001–3,122 OF 3,122

1 2 3 4 5 6 7

Download CSV (full list, 3,122 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS