City · Indiana
Knox, Indiana
Knox, city, in Starke County, Indiana. Knox had 3,601 residents on July 1, 2025 by the Census Bureau's estimate, down 1.1% since 2020; the 2020 Census counted 3,662 and the ACS 2020-2024 5-year estimates put it at 3,479 (±398). GEOID 1840374.
Residents, July 2025 estimate
3,601
Census Bureau estimate (no margin published)
2020 Census count: 3,662 · ACS 2020-2024: 3,479 ±398
Median household income
$48,931
±$8,491 (90% margin)
Indiana: $71,957
Median home value
$140,300
±$33,353 (90% margin)
Indiana: $218,200
Median gross rent
$540
±$109 (90% margin)
Indiana: $1,062
Where is Knox and what county is it in?
Knox is a city in Starke County, Indiana. It covers 4.0 square miles of land, 926 residents per square mile in 2020.
Knox lies entirely within Center Township (Starke County), a township with its own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Knox, and is it growing?
The Census Bureau estimates that 3,601 people lived in Knox on July 1, 2025, down 1.1% since 2020, while Indiana grew 2.8%. The 2020 Census counted 3,662 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 3,479 (±398).
| Measure | Knox | Starke County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,479 ±398 | 23,365 | no clear change |
| Households | 1,469 ±181 | 8,983 | no clear change |
| Average household size | 2.32 ±0.19 | 2.59 | no clear change |
| Housing units | 1,637 ±176 | 11,273 | no clear change |
Knox's population since 2000
From 3,721 in 2000 to 3,601 in 2025: down 3.2%. The 2000, 2010 and 2020 figures are census counts, each for Knox as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. 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.
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); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Knox?
The median resident of Knox is 43.6 years old; 24.7% are under 18 and 19.5% are 65 or older. The largest group is non-Hispanic white residents at 87.0%, then Hispanic or Latino residents (of any race) at 6.3%.
| Measure | Knox | Starke County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 43.6 ±8.0 | 42.1 | no clear change |
| Under 18 years | 24.7% ±4.6 pts | 22.5% | – |
| 65 years and over | 19.5% ±3.5 pts | 20.7% | – |
| Male | 48.4% ±3.7 pts | 50.4% | – |
| Hispanic or Latino (any race) | 6.3% ±2.9 pts | 4.3% | no clear change |
| White alone, not Hispanic | 87.0% ±4.9 pts | 91.0% | −7.2 pts |
| Black or African American alone, not Hispanic | 1.4% ±1.0 pts | 0.5% | – |
| Asian alone, not Hispanic | 0.1% ±0.3 pts | 0.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.2 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 5.1% ±3.4 pts | 3.6% | – |
| Some other race alone, not Hispanic | 0.0% ±1.1 pts | 0.1% | – |
| Born outside the United States | 2.5% ±2.4 pts | 2.3% | – |
| Speak a language other than English at home (age 5+) | 4.5% ±3.2 pts | 3.0% | – |
| Civilian veterans (age 18+) | 8.4% ±2.1 pts | 7.4% | – |
| With a disability | 22.3% ±4.6 pts | 19.7% | – |
| No health insurance coverage | 3.5% ±2.1 pts | 7.8% | no clear change |
| High school graduate or higher (age 25+) | 84.8% ±6.5 pts | 87.0% | – |
| Bachelor's degree or higher (age 25+) | 11.5% ±4.5 pts | 12.5% | no clear change |
| Graduate or professional degree (age 25+) | 3.3% ±2.2 pts | 3.8% | – |
| Lived in the same house a year earlier | 90.8% ±5.4 pts | 93.4% | – |
| Moved from another state in the past year | 2.0% ±2.4 pts | 1.5% | – |
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 Knox earn?
Half of Knox's 1,469 households earn less than $48,931 a year (±$8,491), against $63,960 in Starke County and $71,957 in Indiana. In 2015-2019 it was $45,078 in 2024 dollars; the margins of error cannot tell the two periods apart. 28.7% of residents live below the poverty line.
| Measure | Knox | Starke County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $48,931 ±$8,491 | $63,960 | no clear change |
| Mean household income | $58,369 ±$7,463 | $74,205 | – |
| Per capita income | $24,962 ±$3,322 | $29,104 | no clear change |
| People below the poverty line | 28.7% ±9.7 pts | 13.4% | no clear change |
| Children under 18 below the poverty line | 47.3% ±16.8 pts | 17.0% | – |
| Households receiving SNAP | 30.0% ±8.6 pts | 12.5% | – |
| Households with a computer | 78.7% ±8.2 pts | 90.0% | – |
| Households with a broadband subscription | 73.8% ±8.3 pts | 84.5% | – |
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 Knox?
Owners occupy 59.4% of Knox's occupied homes and renters 40.6%. The median owner-occupied home is valued at $140,300 by its owner (±$33,353). The median renter pays $540 a month including utilities, and 31.4% of renters pay 35% or more of their income on rent.
| Measure | Knox | Starke County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $140,300 ±$33,353 | $157,700 | +$37,783 |
| Median gross rent | $540 ±$109 | $712 | −$230 |
| Renters paying 35% or more of income on rent | 31.4% ±16.4 pts | 24.2% | no clear change |
| Median monthly owner costs, with a mortgage | $1,024 ±$108 | $1,152 | – |
| Owner-occupied homes | 59.4% ±9.5 pts | 83.0% | no clear change |
| Renter-occupied homes | 40.6% ±9.5 pts | 17.0% | – |
| Housing units | 1,637 ±176 | 11,273 | no clear change |
| Homeowner vacancy rate | 5.0% ±7.3 pts | 3.6% | – |
| Rental vacancy rate | 5.2% ±6.8 pts | 3.9% | – |
| Single-family detached homes | 71.4% ±7.9 pts | 84.3% | – |
| Mobile homes | 4.0% ±3.4 pts | 9.4% | – |
| Built 2020 or later | 4.3% ±3.9 pts | 1.1% | – |
| Built 2010 to 2019 | 1.5% ±2.2 pts | 4.4% | – |
| Built 1939 or earlier | 24.6% ±7.9 pts | 16.5% | – |
| Households with no vehicle | 13.3% ±5.2 pts | 6.6% | – |
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 Knox building?
Builders took permits for 3 new housing units in Knox in 2025 (3 in single-family houses), 0.8 per 1,000 residents against 4.2 across Indiana.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Knox work and get to work?
75.3% of Knox's workers drive alone. The average trip to work takes 31.9 minutes.
| Measure | Knox | Starke County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 47.1% ±6.8 pts | 55.1% | – |
| Unemployment rate | 3.2% ±3.4 pts | 3.4% | – |
| Drove alone to work | 75.3% ±10.0 pts | 81.5% | – |
| Carpooled | 11.2% ±6.5 pts | 10.4% | – |
| Public transportation | 1.2% ±1.9 pts | 0.2% | – |
| Walked | 3.4% ±2.8 pts | 1.5% | – |
| Worked from home | 6.4% ±7.7 pts | 4.8% | – |
| Mean travel time to work | 31.9 min ±9.5 | 29.8 min | no clear change |
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 census tracts are in Knox?
1 census tract lies mostly in Knox, and 3 more reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9540Starke County | 3,666 | $49,293 |
| Tract 9538Starke County | 3,710 | $58,295 |
| Tract 9541Starke County | 3,560 | $64,306 |
| Tract 9537Starke County | 4,109 | $74,048 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Knox) · Census block assignment files
How does Knox compare with other places in Indiana?
By the Census Bureau's July 2025 estimates, Knox is the 5,786th-most populous of the 19,476 U.S. incorporated places that have one and the 150th-most populous of 566 in Indiana.
Knox ranks 999th of 1,072 places in Indiana with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 150th | 566 |
| Growth 2020-2025 (PEP) | 940th | 1,056 |
| Residents per square mile | 329th | 1,088 |
| Median household income | 999th | 1,072 |
| Per capita income | 1,038th | 1,087 |
| Median home value | 852nd | 1,075 |
| Median gross rent | 899th | 904 |
| Poverty rate | 20th | 736 |
| Bachelor's degree or higher | 927th | 1,029 |
| Median age | 339th | 1,083 |
| Owner-occupied share | 1,020th | 1,087 |
| Travel time to work | 153rd | 1,088 |
Knox's figures with every place in Indiana (CSV)
Every place in Indiana, sortable · Compare Knox with other places
Source: PlainCities ranks computed 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 reliable are the figures for Knox?
19 of the 57 figures for Knox on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
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 Knox 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' public schools in Knox.