County · Indiana

Adams County, Indiana

Adams County, Indiana. Adams County had 36,650 residents in 2025 by the Census Bureau's estimate, up 2.4% since 2020, in line with Indiana (+2.8%). It holds 19 places (4 cities, villages and boroughs, 12 towns and townships and 3 census-designated) and 7 census tracts. GEOID 18001.

Adams County is the county of the Decatur, IN micropolitan statistical area (the Census Bureau's July 2023 delineation).

Residents, July 2025 estimate

36,650

Census Bureau estimate (no margin published)
2020 Census count: 35,809 · ACS 2020-2024: 36,227

Median household income

$65,289

±$4,066 (90% margin)
Indiana: $71,957

Median home value

$178,400

±$13,273 (90% margin)
Indiana: $218,200

Median gross rent

$833

±$52 (90% margin)
Indiana: $1,062

How many people live in Adams County, and is it growing?

The 2020 Census counted 35,809 residents in Adams County. The Census Bureau estimates 36,650 for July 1, 2025, up 2.4% since 2020, in line with Indiana (+2.8%). The 2020-2024 American Community Survey puts the population at 36,227 over 339 square miles of land.

July 2020→2021 +139 (35,991)
2021→2022 +171 (36,162)
2022→2023 +276 (36,438)
2023→2024 +104 (36,542)
2024→2025 +108 (36,650)

Adams County in Indiana. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Adams County	Indiana	Change since 2015-2019
Total population	36,227	6,851,073	+851
Households	12,401±244	2,716,009	no clear change
Average household size	2.88±0.06	2.46	+0.09
Housing units	13,308±45	2,976,568	no clear change

Adams County's population since 2000

From 33,625 in 2000 to 36,650 in 2025: up 9.0%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 33,625
2005 (estimate) 33,867
2010 Census 34,387
2015 (estimate) 34,962
2020 Census 35,809
2025 (estimate) 36,650

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

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

What cities and towns are in Adams County?

Adams County holds 19 places: 4 cities, villages and boroughs (incorporated places), 12 towns and townships (county subdivisions with their own government) and 3 census-designated places. The largest is Decatur with 10,090 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Adams County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Decatur	city	9,913	9,811±640	$58,646	$142,800	11.3%	100%
Washington Township, Adams County	township	8,654	8,767±24	$61,371	$145,000	7.1%	100%
Wabash Township, Adams County	township	6,545	6,612±22	$61,250	$164,600	10.0%	100%
Root Township	township	6,033	6,115±27	$63,492	$193,800	12.1%	100%
Monroe Township, Adams County	township	5,287	5,335±33	$73,894	$180,600	10.6%	100%
Berne	city	4,173	3,965±288	$62,159	$151,700	12.3%	100%
Blue Creek TownshipGEOID 1800105914	township	1,540	1,218±362	$59,330	$348,200	26.0%	100%
Jefferson Township, Adams CountyGEOID 1800137818	township	1,363	967±467	$46,645	$225,900	23.0%	100%
St. Marys TownshipGEOID 1800167068	township	1,269	1,130±321	$89,286	$229,600	11.9%	100%
Geneva, Adams County	town	1,257	1,347±458	$52,500	$127,300	21.5%	100%
French TownshipGEOID 1800125900	township	1,244	772±301	$105,288	$315,500	0.0%	100%
Preble TownshipGEOID 1800161884	township	1,037	1,440±387	$78,125	$221,000	5.3%	100%
Hartford TownshipGEOID 1800132206	township	981	1,860±464	$59,848	$159,200	17.7%	100%
Kirkland TownshipGEOID 1800139924	township	951	1,464±473	$98,372	$263,000	22.7%	100%
Union Township, Adams CountyGEOID 1800177120	township	905	547±154	$72,031	$213,700	4.8%	100%
Monroe	town	885	707±179	$74,063	$164,400	10.1%	100%
Linn GroveGEOID 1844154	CDP	–	396±310	$75,071	$162,900	32.6%	100%
Pleasant MillsGEOID 1860552	CDP	–	124±100	not published	$311,500	6.5%	100%
PrebleGEOID 1861866	CDP	–	88±112	not published	not published	42.0%	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Adams County?

The median resident of Adams County is 33.2 years old; 31.3% are under 18 and 16.3% are 65 or older. The largest group is non-Hispanic white residents at 92.7%, then Hispanic or Latino residents (of any race) at 4.8%. 1.6% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Adams County	Indiana	Change since 2015-2019
Median age	33.2±0.4	38.1	no clear change
Under 18 years	31.3%±0.1 pts	23.3%	–
65 years and over	16.3%±0.2 pts	16.8%	–
Hispanic or Latino (any race)	4.8%	8.6%	+0.3 pts
White alone, not Hispanic	92.7%±0.3 pts	75.4%	−0.8 pts
Black or African American alone, not Hispanic	0.3%±0.2 pts	9.1%	–
Asian alone, not Hispanic	0.4%±0.2 pts	2.6%	no clear change
American Indian and Alaska Native alone, not Hispanic	0.0%±0.1 pts	0.1%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.1 pts	0.0%	–
Two or more races, not Hispanic	1.8%±0.4 pts	3.8%	–
Some other race alone, not Hispanic	0.1%±0.1 pts	0.4%	–
Born outside the United States	1.6%±0.7 pts	6.3%	no clear change
Speak a language other than English at home (age 5+)	16.0%±3.0 pts	10.3%	–
Civilian veterans (age 18+)	4.3%±1.0 pts	6.3%	–
With a disability	12.3%±1.4 pts	14.2%	–
No health insurance coverage	20.7%±2.6 pts	7.4%	no clear change
High school graduate or higher (age 25+)	88.9%±1.9 pts	90.4%	–
Bachelor's degree or higher (age 25+)	16.2%±1.8 pts	29.5%	no clear change
Graduate or professional degree (age 25+)	5.1%±0.8 pts	10.8%	–
Moved from another state in the past year	3.3%±1.7 pts	2.1%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Adams County earn?

Half of Adams County's 12,401 households earn less than $65,289 a year (±$4,066), against $71,957 in Indiana. In 2015-2019 it was $64,616 in 2024 dollars; the margins of error cannot tell the two periods apart. 11.2% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Adams County	Indiana	Change since 2015-2019
Median household income	$65,289±$4,066	$71,957	no clear change
Mean household income	$82,576±$3,495	$95,247	–
Per capita income	$28,631±$1,035	$38,351	no clear change
People below the poverty line	11.2%±2.2 pts	12.3%	−5.6 pts
Children under 18 below the poverty line	14.0%±4.7 pts	16.0%	−10.5 pts
Households receiving SNAP	6.6%±1.9 pts	9.1%	–
Households with a broadband subscription	78.4%±2.6 pts	89.9%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Adams County?

Owners occupy 83.5% of Adams County's occupied homes and renters 16.5%. The median owner-occupied home is valued at $178,400 by its owner (±$13,273). The median renter pays $833 a month including utilities, and 32.1% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Adams County	Indiana	Change since 2015-2019
Median home value (owner-occupied)	$178,400±$13,273	$218,200	+$19,271
Median gross rent	$833±$52	$1,062	+$65
Renters paying 35% or more of income on rent	32.1%±8.0 pts	38.9%	no clear change
Median monthly owner costs, with a mortgage	$1,203±$59	$1,404	–
Owner-occupied homes	83.5%±2.1 pts	70.6%	+6.4 pts
Housing units	13,308±45	2,976,568	no clear change
Homeowner vacancy rate	0.3%±0.3 pts	0.8%	–
Rental vacancy rate	8.2%±4.9 pts	5.6%	–
Single-family detached homes	83.1%±2.0 pts	72.6%	–
Mobile homes	1.4%±0.7 pts	4.4%	–
Built 2020 or later	0.7%±0.5 pts	1.7%	–
Built 1939 or earlier	24.1%±2.8 pts	16.0%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Adams County building?

Builders took permits for 98 new housing units across Adams County in 2025 (96 single-family), 2.7 per 1,000 residents.

2019 53 units
2020 83 units
2021 80 units
2022 93 units
2023 120 units
2024 85 units
2025 98 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Adams County get to work?

74.8% of Adams County's workers drive alone and 6.9% work from home. The average trip to work takes 24.6 minutes. The unemployment rate in 2020-2024 averaged 2.8%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Adams County	Indiana	Change since 2015-2019
In the labor force (age 16+)	61.2%±1.8 pts	63.8%	–
Unemployment rate	2.8%±1.0 pts	4.3%	no clear change
Drove alone to work	74.8%±3.2 pts	76.3%	–
Carpooled	13.3%±2.2 pts	9.1%	–
Public transportation	0.1%±0.1 pts	0.6%	–
Walked	3.6%±1.3 pts	1.9%	–
Worked from home	6.9%±1.7 pts	10.7%	+2.1 pts
Mean travel time to work	24.6 min±1.9	24.1 min	+2.7 min

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Adams County's census tracts?

Adams County is divided into 7 census tracts. Among those with a reliable estimate, median household income runs from $52,721 (Tract 302) to $91,923 (Tract 304).

Census tracts of Adams County, ACS 2020-2024 5-year estimates; sort by any column

Tract 30118001030100	Decatur (5%)	4,589	5,015±474	$69,821	$232,400	$961	4.5%
Tract 30218001030200	Decatur (79%)	5,103	4,922±468	$52,721	$149,900	$729	11.4%
Tract 30318001030300	Decatur (78%)	5,246	5,232±343	$66,315	$124,800	$1,197	10.9%
Tract 30418001030400	Decatur (4%)	3,674	4,050±488	$91,923	$255,600	not published	14.2%
Tract 30518001030500	Monroe (14%)	6,718	6,276±498	$81,250	$257,400	$761	11.6%
Tract 30618001030600	Berne (92%)	3,412	3,276±342	$67,031	$145,800	$832	9.1%
Tract 30718001030700	Geneva (16%)	7,067	7,456±569	$59,219	$207,300	$813	14.6%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Adams County compare with Indiana's other counties?

Adams County's rank among Indiana's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	43rd of 92
Growth 2020-2025	25th of 92
Residents per square mile	37th of 92
Median household income	62nd of 92
Median home value	47th of 92
Median gross rent	63rd of 92
Poverty rate	51st of 92
Bachelor's degree or higher	71st of 92
Median age	89th of 92

Every county in Indiana

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

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

Not on this page: crime, weather and schools for Adams County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.