PlainCities

Counties · Indiana

Counties of Indiana

Indiana has 92 counties. Marion County is the largest with 992,196 residents in 2025. 72 of the 92 gained residents between 2020 and 2025 by the Census Bureau's estimates.

What counties are in Indiana?

Sorted by the 2025 population estimate; sort by any column.

Counties of Indiana: 2025 estimate, change since 2020, ACS 2020-2024 5-year estimates
Marion County992,196+1.5%25253$66,346$224,000
Lake County504,612+1.2%35132$71,493$230,600
Allen County402,329+4.4%3496$70,737$214,900
Hamilton County387,036+11.4%2157$121,530$405,500
St. Joseph County272,861−0.0%2882$66,868$192,800
Elkhart County208,774+0.8%2845$68,561$210,400
Hendricks County193,510+10.7%2631$101,144$307,600
Tippecanoe County190,456+2.3%2643$60,636$239,300
Vanderburgh County181,995+1.0%1359$61,648$184,000
Porter County176,049+1.6%3243$87,972$281,500
Johnson County174,262+7.7%2028$90,454$284,600
Monroe County143,345+1.8%1733$65,868$285,200
Madison County135,088+3.8%3039$63,037$161,300
Clark County130,451+7.7%2327$74,214$222,900
Delaware County113,106+1.1%2334$58,127$139,400
LaPorte County111,294−1.0%4231$71,055$195,500
Vigo County106,512+0.3%3032$52,976$148,500
Hancock County90,969+14.0%2415$93,186$274,800
Bartholomew County85,729+4.3%3216$79,901$232,800
Howard County83,904+0.3%2021$64,027$165,000
Floyd County82,153+2.1%1020$79,704$251,000
Kosciusko County80,892+0.8%3821$75,317$216,000
Boone County80,689+14.0%1811$111,250$376,200
Morgan County74,967+4.4%2717$79,429$237,600
Warrick County66,803+4.6%1716$89,844$242,500
Grant County66,524−0.2%3016$53,522$122,300
Wayne County66,169−0.6%3218$55,692$140,200
Dearborn County51,609+1.8%2413$84,735$243,400
Henry County49,137+0.5%3213$63,150$154,400
Noble County47,937+1.0%2910$71,723$196,800
Jackson County47,370+2.0%2111$70,262$178,300
Marshall County46,599+1.1%2212$71,808$204,900
Shelby County45,882+1.8%3110$72,190$212,400
Lawrence County45,568+1.2%2113$66,468$175,000
DeKalb County44,535+2.9%259$74,331$194,100
Dubois County44,016+0.9%249$75,979$230,100
LaGrange County41,305+2.1%249$84,487$255,900
Harrison County40,437+2.0%259$74,475$229,600
Montgomery County38,954+2.7%259$71,479$171,800
Putnam County37,876+3.1%239$78,378$218,900
Cass County37,836−0.1%2611$56,403$133,800
Huntington County37,224+1.5%199$66,301$161,600
Adams County36,650+2.4%197$65,289$178,400
Knox County35,652−1.7%2311$61,237$137,700
Whitley County35,046+2.5%168$78,083$219,400
Steuben County34,799+1.0%289$74,911$216,200
Miami County34,487−4.1%2610$61,139$126,200
Daviess County34,209+2.5%188$68,503$197,200
Jasper County33,894+2.9%198$77,314$221,500
Clinton County33,322+0.4%258$65,019$164,100
Jefferson County33,279+0.4%177$64,577$194,600
Gibson County33,091+0.2%228$67,573$180,000
Greene County31,165+1.2%289$62,094$153,200
Wabash County30,713−0.9%178$66,806$157,200
Ripley County29,434+1.5%257$70,573$222,500
Wells County28,883+2.5%217$71,957$197,600
Washington County28,383+0.8%237$64,641$172,200
Jennings County27,622+0.0%206$69,322$161,500
Decatur County26,576+0.4%236$69,783$199,100
Clay County26,410−0.2%266$70,010$153,000
White County25,164+1.9%229$67,303$175,900
Scott County25,053+2.7%85$56,352$158,400
Posey County24,988−0.9%207$78,129$222,900
Randolph County24,438−0.3%248$60,791$113,400
Fayette County23,533+0.6%127$59,321$130,700
Starke County23,425+0.2%187$63,960$157,700
Franklin County23,286+2.2%285$78,074$249,500
Owen County21,886+2.6%176$62,464$172,400
Sullivan County20,831+0.1%238$56,204$131,100
Carroll County20,655+1.7%257$65,645$180,900
Jay County20,118−1.8%187$54,969$117,500
Fulton County20,091−1.9%166$61,360$156,500
Spencer County20,061+1.3%216$74,506$185,200
Orange County19,834−0.2%156$65,873$158,700
Perry County19,389+1.1%115$61,151$163,400
Fountain County17,013+3.2%235$62,542$143,400
Rush County16,767+0.1%205$66,473$166,800
Parke County16,642+3.0%225$68,485$151,200
Brown County15,777+2.0%75$78,528$269,100
Vermillion County15,488+0.3%175$60,200$113,100
Tipton County15,319−0.2%135$76,156$174,600
Newton County14,188+2.6%194$75,481$171,500
Pulaski County12,463−0.4%204$62,792$156,400
Pike County12,003−2.0%184$71,334$154,900
Blackford County11,730−3.1%104$51,326$107,500
Crawford County10,509−0.2%173$49,640$117,700
Switzerland County10,037+2.9%113$65,343$175,800
Martin County9,856+0.5%113$68,594$159,400
Benton County8,883+2.0%193$65,875$151,000
Warren County8,474+0.5%263$82,425$182,500
Union County6,863−3.2%92$76,424$173,500
Ohio County5,994+1.0%52$70,392$213,100

Source: PEP Vintage 2025 (CO-EST2025); American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Census population estimates

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections