City · Indiana
Marion, Grant County, Indiana
Marion, Grant County, city, in Grant County, Indiana. Marion, Grant County had 28,234 residents on July 1, 2025 by the Census Bureau's estimate, down 0.3% since 2020; the 2020 Census counted 28,310 and the ACS 2020-2024 5-year estimates put it at 27,531 (±646). GEOID 1846908.
Residents, July 2025 estimate
28,234
Census Bureau estimate (no margin published)
2020 Census count: 28,310 · ACS 2020-2024: 27,531 ±646
Median household income
$43,343
±$3,933 (90% margin)
Indiana: $71,957
Median home value
$85,300
±$6,365 (90% margin)
Indiana: $218,200
Median gross rent
$805
±$42 (90% margin)
Indiana: $1,062
Where is Marion, Grant County and what county is it in?
Marion, Grant County is a city in Grant County, Indiana. It covers 15.7 square miles of land, 1,803 residents per square mile in 2020.
Marion, Grant County is in the Marion, IN micropolitan statistical area (Census Bureau delineation, July 2023).
Marion, Grant County lies mostly within Center Township (Grant County) and reaches into Franklin Township (Grant County), Washington Township (Grant County) and Pleasant Township (Grant County), towns or townships with their 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 Marion, Grant County, and is it growing?
The Census Bureau estimates that 28,234 people lived in Marion, Grant County on July 1, 2025, down 0.3% since 2020, while Indiana grew 2.8%. The 2020 Census counted 28,310 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 27,531 (±646).
| Measure | Marion, Grant County | Grant County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 27,531 ±646 | 66,295 | no clear change |
| Households | 10,960 ±478 | 26,773 | no clear change |
| Average household size | 2.17 ±0.08 | 2.28 | no clear change |
| Housing units | 12,924 ±489 | 29,907 | no clear change |
Marion, Grant County's population since 2000
From 31,320 in 2000 to 28,234 in 2025: down 9.9%. The 2000, 2010 and 2020 figures are census counts, each for Marion, Grant County 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 Marion, Grant County?
The median resident of Marion, Grant County is 35.2 years old; 20.3% are under 18 and 18.5% are 65 or older. The largest group is non-Hispanic white residents at 73.4%, then non-Hispanic Black residents at 9.8%. 3.9% of residents were born outside the United States.
| Measure | Marion, Grant County | Grant County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 35.2 ±1.9 | 38.7 | no clear change |
| Under 18 years | 20.3% ±1.4 pts | 21.3% | – |
| 65 years and over | 18.5% ±1.4 pts | 19.3% | – |
| Male | 47.8% ±1.6 pts | 48.1% | – |
| Hispanic or Latino (any race) | 8.3% ±1.3 pts | 5.5% | +2.2 pts |
| White alone, not Hispanic | 73.4% ±1.9 pts | 82.6% | no clear change |
| Black or African American alone, not Hispanic | 9.8% ±1.3 pts | 4.8% | −4.5 pts |
| Asian alone, not Hispanic | 1.1% ±0.5 pts | 0.9% | no clear change |
| American Indian and Alaska Native alone, not Hispanic | 0.3% ±0.4 pts | 0.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 7.0% ±1.4 pts | 5.8% | – |
| Some other race alone, not Hispanic | 0.1% ±0.1 pts | 0.1% | – |
| Born outside the United States | 3.9% ±0.9 pts | 2.8% | +2.1 pts |
| Speak a language other than English at home (age 5+) | 6.5% ±1.2 pts | 3.9% | – |
| Civilian veterans (age 18+) | 7.3% ±1.3 pts | 8.4% | – |
| With a disability | 23.1% ±2.0 pts | 20.4% | – |
| No health insurance coverage | 8.0% ±1.7 pts | 6.8% | no clear change |
| High school graduate or higher (age 25+) | 85.5% ±2.3 pts | 89.3% | – |
| Bachelor's degree or higher (age 25+) | 16.9% ±2.4 pts | 20.3% | no clear change |
| Graduate or professional degree (age 25+) | 6.5% ±1.4 pts | 8.0% | – |
| Lived in the same house a year earlier | 83.3% ±2.5 pts | 86.4% | – |
| Moved from another state in the past year | 2.8% ±0.7 pts | 2.6% | – |
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 Marion, Grant County earn?
Half of Marion, Grant County's 10,960 households earn less than $43,343 a year (±$3,933), against $53,522 in Grant County and $71,957 in Indiana. In 2015-2019 it was $40,585 in 2024 dollars; the margins of error cannot tell the two periods apart. 29.6% of residents live below the poverty line.
| Measure | Marion, Grant County | Grant County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $43,343 ±$3,933 | $53,522 | no clear change |
| Mean household income | $58,145 ±$4,640 | $71,971 | – |
| Per capita income | $24,101 ±$1,714 | $29,423 | no clear change |
| People below the poverty line | 29.6% ±3.3 pts | 19.8% | no clear change |
| Children under 18 below the poverty line | 44.0% ±6.4 pts | 28.3% | no clear change |
| Households receiving SNAP | 19.9% ±2.9 pts | 13.8% | – |
| Households with a computer | 91.3% ±2.0 pts | 92.7% | – |
| Households with a broadband subscription | 86.1% ±2.3 pts | 88.2% | – |
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 Marion, Grant County?
Owners occupy 58.8% of Marion, Grant County's occupied homes and renters 41.2%. The median owner-occupied home is valued at $85,300 by its owner (±$6,365). The median renter pays $805 a month including utilities, and 34.5% of renters pay 35% or more of their income on rent.
| Measure | Marion, Grant County | Grant County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $85,300 ±$6,365 | $122,300 | no clear change |
| Median gross rent | $805 ±$42 | $853 | no clear change |
| Renters paying 35% or more of income on rent | 34.5% ±6.1 pts | 36.6% | no clear change |
| Median monthly owner costs, with a mortgage | $934 ±$45 | $1,096 | – |
| Owner-occupied homes | 58.8% ±3.1 pts | 72.7% | no clear change |
| Renter-occupied homes | 41.2% ±3.1 pts | 27.3% | – |
| Housing units | 12,924 ±489 | 29,907 | no clear change |
| Homeowner vacancy rate | 0.9% ±0.8 pts | 0.8% | – |
| Rental vacancy rate | 5.1% ±3.0 pts | 5.9% | – |
| Single-family detached homes | 70.2% ±3.3 pts | 79.3% | – |
| Mobile homes | 4.5% ±2.0 pts | 5.8% | – |
| Built 2020 or later | 0.2% ±0.3 pts | 0.3% | – |
| Built 2010 to 2019 | 2.2% ±0.8 pts | 3.0% | – |
| Built 1939 or earlier | 23.3% ±3.0 pts | 21.8% | – |
| Households with no vehicle | 9.2% ±2.1 pts | 6.4% | – |
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 Marion, Grant County building?
Builders took permits for 6 new housing units in Marion, Grant County in 2025 (6 in single-family houses), 0.2 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 Marion, Grant County work and get to work?
71.6% of Marion, Grant County's workers drive alone and 6.7% work from home. The average trip to work takes 18.0 minutes. The unemployment rate in 2020-2024 averaged 7.7%.
| Measure | Marion, Grant County | Grant County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 55.3% ±2.6 pts | 58.4% | – |
| Unemployment rate | 7.7% ±1.8 pts | 6.3% | no clear change |
| Drove alone to work | 71.6% ±3.6 pts | 74.9% | – |
| Carpooled | 10.6% ±3.0 pts | 10.2% | – |
| Public transportation | 0.0% ±0.1 pts | 0.1% | – |
| Walked | 8.9% ±1.9 pts | 5.5% | – |
| Worked from home | 6.7% ±1.7 pts | 7.8% | no clear change |
| Mean travel time to work | 18.0 min ±1.5 | 22.0 min | +3.2 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 census tracts are in Marion, Grant County?
8 census tracts lie mostly in Marion, Grant County, and 4 more reach into it (2020 census blocks). Their median household incomes run from $36,390 (Tract 9) to $58,951 (Tract 5).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 8Grant County | 6,839 | $46,954 |
| Tract 1Grant County | 4,217 | $43,770 |
| Tract 5Grant County | 5,350 | $58,951 |
| Tract 4Grant County | 3,651 | $44,844 |
| Tract 2Grant County | 3,035 | $38,917 |
| Tract 7Grant County | 3,329 | $39,821 |
| Tract 6Grant County | 2,640 | $46,463 |
| Tract 9Grant County | 2,350 | $36,390 |
| Tract 106Grant County | 3,264 | $72,270 |
| Tract 102Grant County | 4,707 | $77,813 |
| Tract 108Grant County | 4,361 | $57,500 |
| Tract 101Grant County | 5,271 | $79,837 |
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 Marion, Grant County) · Census block assignment files
How does Marion, Grant County compare with other places in Indiana?
By the Census Bureau's July 2025 estimates, Marion, Grant County is the 1,425th-most populous of the 19,476 U.S. incorporated places that have one and the 37th-most populous of 566 in Indiana.
Marion, Grant County ranks 1,042nd 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 | 37th | 566 |
| Growth 2020-2025 (PEP) | 799th | 1,056 |
| Residents per square mile | 114th | 1,088 |
| Median household income | 1,042nd | 1,072 |
| Per capita income | 1,052nd | 1,087 |
| Median home value | 1,057th | 1,075 |
| Median gross rent | 676th | 904 |
| Poverty rate | 17th | 736 |
| Bachelor's degree or higher | 681st | 1,029 |
| Median age | 892nd | 1,083 |
| Owner-occupied share | 1,025th | 1,087 |
| Work from home | 411th | 595 |
| Travel time to work | 1,034th | 1,088 |
Marion, Grant County's figures with every place in Indiana (CSV)
Every place in Indiana, sortable · Compare Marion, Grant County 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 Marion, Grant County?
6 of the 57 figures for Marion, Grant County 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 Marion, Grant 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' public schools in Marion.