County · Indiana

DeKalb County, Indiana

DeKalb County, Indiana. DeKalb County had 44,535 residents in 2025 by the Census Bureau's estimate, up 2.9% since 2020, in line with Indiana (+2.8%). It holds 25 places (9 cities, villages and boroughs, 15 towns and townships and 1 census-designated) and 9 census tracts. GEOID 18033.

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

Residents, July 2025 estimate

44,535

Census Bureau estimate (no margin published)
2020 Census count: 43,265 · ACS 2020-2024: 43,807

Median household income

$74,331

±$4,948 (90% margin)
Indiana: $71,957

Median home value

$194,100

±$9,085 (90% margin)
Indiana: $218,200

Median gross rent

$861

±$29 (90% margin)
Indiana: $1,062

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

The 2020 Census counted 43,265 residents in DeKalb County. The Census Bureau estimates 44,535 for July 1, 2025, up 2.9% since 2020, in line with Indiana (+2.8%). The 2020-2024 American Community Survey puts the population at 43,807 over 363 square miles of land.

July 2020→2021 +80 (43,372)
2021→2022 +365 (43,737)
2022→2023 +411 (44,148)
2023→2024 +190 (44,338)
2024→2025 +197 (44,535)

DeKalb County in Indiana. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	DeKalb County	Indiana	Change since 2015-2019
Total population	43,807	6,851,073	+880
Households	17,096±290	2,716,009	no clear change
Average household size	2.53±0.04	2.46	no clear change
Housing units	18,384±42	2,976,568	+339

DeKalb County's population since 2000

From 40,285 in 2000 to 44,535 in 2025: up 10.5%. 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 40,285
2005 (estimate) 41,494
2010 Census 42,223
2015 (estimate) 42,511
2020 Census 43,265
2025 (estimate) 44,535

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 DeKalb County?

DeKalb County holds 25 places: 9 cities, villages and boroughs (incorporated places), 15 towns and townships (county subdivisions with their own government) and 1 census-designated place. The largest is Union Township, DeKalb County with 14,231 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 DeKalb County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Union Township, DeKalb County	township	13,718	13,917±19	$75,568	$192,800	8.7%	100%
Auburn	city	13,412	13,565±356	$68,750	$190,800	9.8%	100%
Keyser Township	township	7,853	7,927±35	$62,234	$160,700	13.4%	100%
Garrett	city	6,542	6,642±318	$64,179	$154,200	15.3%	100%
Wilmington Township	township	3,995	4,026±16	$69,091	$117,200	15.7%	100%
Jackson Township, DeKalb County	township	3,664	3,749±22	$103,346	$305,900	5.0%	100%
Grant Township, DeKalb County	township	3,086	3,111±16	$80,000	$157,800	8.4%	100%
Butler	city	2,635	2,660±344	$54,688	$107,700	19.3%	100%
Waterloo	town	2,116	2,073±397	$67,083	$104,600	12.5%	100%
Butler Township, DeKalb County	township	1,733	2,012±562	$80,568	$226,500	13.2%	100%
Smithfield Township	township	1,662	1,629±308	$63,571	$204,600	6.8%	100%
Concord Township, DeKalb County	township	1,405	1,486±349	$65,192	$124,800	7.3%	100%
Fairfield Township, DeKalb County	township	1,367	1,233±259	$103,250	$324,800	1.5%	100%
Richland Township, DeKalb County	township	1,235	1,187±269	$84,123	$263,400	3.9%	100%
Spencer Township, DeKalb CountyGEOID 1803371918	township	1,198	1,005±314	$54,018	$210,100	16.2%	100%
Franklin Township, DeKalb County	township	1,178	1,271±287	$68,500	$185,100	7.5%	100%
Ashley	town	1,026	1,230±260	$49,091	$132,100	11.1%	65%
Newville TownshipGEOID 1803353784	township	562	700±308	$83,167	$231,300	1.6%	100%
St. Joe	town	418	411±145	$55,000	$87,100	12.7%	100%
Troy Township, DeKalb CountyGEOID 1803376598	township	333	378±318	$100,536	$334,700	0.0%	100%
Stafford Township, DeKalb CountyGEOID 1803372512	township	276	176±86	$120,227	not published	0.0%	100%
SpencervilleGEOID 1871990	CDP	–	244±135	$36,250	not published	0.0%	100%
CorunnaGEOID 1815220	town	236	128±57	$57,500	$85,000	6.3%	100%
Hamilton	town	1,529	1,939±232	$69,761	$298,200	7.3%	15%
AltonaGEOID 1801288	town	213	415±193	$64,237	$114,600	2.7%	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 DeKalb County?

The median resident of DeKalb County is 38.4 years old; 24.1% are under 18 and 17.4% are 65 or older. The largest group is non-Hispanic white residents at 93.6%, then Hispanic or Latino residents (of any race) at 3.1%. 1.5% 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	DeKalb County	Indiana	Change since 2015-2019
Median age	38.4±0.5	38.1	no clear change
Under 18 years	24.1%±0.1 pts	23.3%	–
65 years and over	17.4%±0.2 pts	16.8%	–
Hispanic or Latino (any race)	3.1%	8.6%	+0.3 pts
White alone, not Hispanic	93.6%±0.4 pts	75.4%	−1.4 pts
Black or African American alone, not Hispanic	0.1%±0.1 pts	9.1%	–
Asian alone, not Hispanic	0.6%±0.1 pts	2.6%	+0.3 pts
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	2.5%±0.3 pts	3.8%	–
Some other race alone, not Hispanic	0.2%±0.2 pts	0.4%	–
Born outside the United States	1.5%±0.4 pts	6.3%	no clear change
Speak a language other than English at home (age 5+)	2.5%±0.6 pts	10.3%	–
Civilian veterans (age 18+)	6.7%±0.8 pts	6.3%	–
With a disability	14.6%±1.5 pts	14.2%	–
No health insurance coverage	6.5%±1.2 pts	7.4%	no clear change
High school graduate or higher (age 25+)	92.9%±1.1 pts	90.4%	–
Bachelor's degree or higher (age 25+)	20.2%±1.4 pts	29.5%	no clear change
Graduate or professional degree (age 25+)	6.0%±0.9 pts	10.8%	–
Moved from another state in the past year	0.6%±0.3 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 DeKalb County earn?

Half of DeKalb County's 17,096 households earn less than $74,331 a year (±$4,948), against $71,957 in Indiana. In 2015-2019 it was $69,437 in 2024 dollars; the margins of error cannot tell the two periods apart. 9.5% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	DeKalb County	Indiana	Change since 2015-2019
Median household income	$74,331±$4,948	$71,957	no clear change
Mean household income	$88,977±$3,331	$95,247	–
Per capita income	$35,553±$1,297	$38,351	no clear change
People below the poverty line	9.5%±1.5 pts	12.3%	no clear change
Children under 18 below the poverty line	11.7%±3.3 pts	16.0%	−6.8 pts
Households receiving SNAP	6.3%±1.3 pts	9.1%	–
Households with a broadband subscription	88.1%±1.8 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 DeKalb County?

Owners occupy 82.1% of DeKalb County's occupied homes and renters 17.9%. The median owner-occupied home is valued at $194,100 by its owner (±$9,085). The median renter pays $861 a month including utilities, and 29.3% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	DeKalb County	Indiana	Change since 2015-2019
Median home value (owner-occupied)	$194,100±$9,085	$218,200	+$41,125
Median gross rent	$861±$29	$1,062	no clear change
Renters paying 35% or more of income on rent	29.3%±5.4 pts	38.9%	no clear change
Median monthly owner costs, with a mortgage	$1,207±$42	$1,404	–
Owner-occupied homes	82.1%±2.2 pts	70.6%	+6.0 pts
Housing units	18,384±42	2,976,568	+339
Homeowner vacancy rate	0.5%±0.4 pts	0.8%	–
Rental vacancy rate	13.9%±5.0 pts	5.6%	–
Single-family detached homes	78.7%±2.0 pts	72.6%	–
Mobile homes	7.7%±1.7 pts	4.4%	–
Built 2020 or later	2.1%±0.7 pts	1.7%	–
Built 1939 or earlier	27.8%±2.3 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 DeKalb County building?

Builders took permits for 114 new housing units across DeKalb County in 2025 (96 single-family), 2.6 per 1,000 residents.

2019 150 units
2020 133 units
2021 138 units
2022 175 units
2023 142 units
2024 116 units
2025 114 units

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

How do people in DeKalb County get to work?

81.4% of DeKalb County's workers drive alone and 5.0% work from home. The average trip to work takes 21.3 minutes. The unemployment rate in 2020-2024 averaged 4.5%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	DeKalb County	Indiana	Change since 2015-2019
In the labor force (age 16+)	66.4%±1.1 pts	63.8%	–
Unemployment rate	4.5%±1.3 pts	4.3%	no clear change
Drove alone to work	81.4%±2.1 pts	76.3%	–
Carpooled	10.9%±1.9 pts	9.1%	–
Public transportation	0.2%±0.1 pts	0.6%	–
Walked	1.1%±0.5 pts	1.9%	–
Worked from home	5.0%±1.1 pts	10.7%	+2.3 pts
Mean travel time to work	21.3 min±1.1	24.1 min	+1.9 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 DeKalb County's census tracts?

DeKalb County is divided into 9 census tracts. Among those with a reliable estimate, median household income runs from $60,656 (Tract 206.02) to $84,063 (Tract 207).

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

Tract 20118033020100	Ashley (12%)	4,506	4,511±390	$79,905	$233,600	$759	5.0%
Tract 20218033020200	Waterloo (42%)	4,346	4,298±267	$82,091	$179,000	$855	7.2%
Tract 20318033020300	Butler (41%)	4,173	4,178±93	$71,481	$119,800	$811	15.1%
Tract 20418033020400	Auburn (78%)	7,842	7,731±633	$82,711	$212,300	$876	9.0%
Tract 20518033020500	Auburn (96%)	5,987	6,214±629	$65,110	$177,200	$829	8.2%
Tract 206.0118033020601	Garrett (74%)	3,095	3,006±322	$64,474	$154,600	$797	8.8%
Tract 206.0218033020602	Garrett (76%)	4,685	5,158±330	$60,656	$166,900	$881	16.0%
Tract 20718033020700	Auburn (9%)	4,254	4,194±539	$84,063	$259,300	$959	9.8%
Tract 20818033020800	St. Joe (14%)	4,377	4,517±356	$74,651	$224,100	$1,511	6.6%

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

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

DeKalb County's rank among Indiana's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	35th of 92
Growth 2020-2025	16th of 92
Residents per square mile	31st of 92
Median household income	28th of 92
Median home value	40th of 92
Median gross rent	47th of 92
Poverty rate	71st of 92
Bachelor's degree or higher	45th of 92
Median age	75th 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 DeKalb 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.