County demographics · Indiana
Marion County, Indiana demographics
Marion County, Indiana (county FIPS 18097) has a median household income of $66,346 (±$943) and a total population of 975,809 in the American Community Survey 5-year estimates for 2020-2024.
Margins of error are at the 90% confidence level. The figures describe 2020-2024 (dollars in 2024 dollars), not the present. 41 ZIP Code Tabulation Areas overlap the county (Census 2020).
Data as of Oct 22, 2026 (Olympus publication) · Markdown version
- Values are ACS 5-year estimates for 2020-2024 (dollars in 2024 dollars), not current figures.
- ZCTA-county overlaps come from the Census 2020 relationship file and use 2020 counties, by land area; Connecticut uses its legacy counties, not the planning regions in ACS 2022+.
ACS 5-year estimates, 2020-2024
Census American Community Survey 5-year estimates for 2020-2024, with 90% margins of error as published by the Census Bureau.
| Metric | Estimate | Margin of error (90%) | ACS table |
|---|---|---|---|
| Total population | 975,809 | none (controlled estimate) | B01003 |
| Median age | 34.4 years | ±0.1 years | B01002 |
| Households | 400,432 | ±1,895 | B11001 |
| Median household income (inflation-adjusted to the final ACS year) | $66,346 | ±$943 | B19013 |
| Median value of owner-occupied housing units | $224,000 | ±$2,242 | B25077 |
| Median gross rent | $1,153 | ±$10 | B25064 |
| Owner-occupied share of occupied housing units | 56.6% | none (derived from several estimates) | B25003 (derived) |
| Renter-occupied share of occupied housing units | 43.5% | none (derived from several estimates) | B25003 (derived) |
| High school graduate or higher (age 25+) | 88.1% | none (derived from several estimates) | B15003 (derived) |
| Bachelor's degree or higher (age 25+) | 34.8% | none (derived from several estimates) | B15003 (derived) |
| Share of people below the poverty level | 15.4% | none (derived from several estimates) | B17001 (derived) |
| Unemployment rate (civilian labor force) | 5% | none (derived from several estimates) | B23025 (derived) |
- Dollar values are in 2024 inflation-adjusted dollars.
- Percentages' margins of error are in percentage points (pp).
Geography
| Measure | Value |
|---|---|
| County FIPS | 18097 |
| Land area | 396 sq mi |
| Water area | 7.01 sq mi |
| Population density | 2,464 per sq mi of land |
| Geography vintage | 2024 Gazetteer |
ZIP codes (ZCTAs) in this county
ZCTAs that overlap the county in the Census 2020 ZCTA to county relationship file, largest share of the county's land first.
| ZCTA | Share of county land | Share of ZCTA land | County is the ZCTA's primary county |
|---|---|---|---|
| 46239 | 7.1% | 99.2% | Yes |
| 46241 | 6% | 100% | Yes |
| 46217 | 5.3% | 100% | Yes |
| 46221 | 5% | 100% | Yes |
| 46227 | 4.2% | 100% | Yes |
| 46259 | 3.9% | 67.9% | Yes |
| 46226 | 3.7% | 100% | Yes |
| 46237 | 3.7% | 100% | Yes |
| 46203 | 3.5% | 100% | Yes |
| 46219 | 3.3% | 100% | Yes |
| 46278 | 3.2% | 95.8% | Yes |
| 46254 | 3.2% | 100% | Yes |
| 46268 | 3.1% | 97.7% | Yes |
| 46220 | 3% | 100% | Yes |
| 46222 | 2.8% | 100% | Yes |
| 46236 | 2.6% | 99.8% | Yes |
| 46260 | 2.6% | 99% | Yes |
| 46256 | 2.6% | 92% | Yes |
| 46229 | 2.6% | 89.7% | Yes |
| 46235 | 2.4% | 100% | Yes |
| 46240 | 2.4% | 97.8% | Yes |
| 46218 | 2.4% | 100% | Yes |
| 46228 | 2% | 100% | Yes |
| 46250 | 1.9% | 99.4% | Yes |
| 46214 | 1.9% | 100% | Yes |
| 46224 | 1.8% | 100% | Yes |
| 46208 | 1.7% | 100% | Yes |
| 46205 | 1.6% | 100% | Yes |
| 46234 | 1.6% | 49.9% | |
| 46113 | 1.5% | 37.3% | |
| 46201 | 1.4% | 100% | Yes |
| 46231 | 1.4% | 47.8% | |
| 46202 | 1.4% | 100% | Yes |
| 46225 | 1% | 100% | Yes |
| 46107 | 0.8% | 100% | Yes |
| 46216 | 0.8% | 100% | Yes |
| 46204 | 0.3% | 100% | Yes |
| 46077 | 0.2% | 1.5% | |
| 46163 | 0.1% | 1% | |
| 46183 | 0% | 100% | Yes |
| 46206 | 0% | 100% | Yes |
Sources
- American Community Survey 5-year estimates (Census Data API) — U.S. Census Bureau. ACS 5-year 2020-2024 (release acs5-2024:county), source date 2025-09-02. https://api.census.gov/data/2024/acs/acs5?get=NAME,B01003_001E,B01003_001M,B01002_001E,B01002_001M,B11001_001E,B11001_001M,B19013_001E,B19013_001M,B25077_001E,B25077_001M,B25064_001E,B25064_001M,B25003_001E,B25003_002E,B25003_003E,B15003_001E,B15003_017E,B15003_018E,B15003_019E,B15003_020E,B15003_021E,B15003_022E,B15003_023E,B15003_024E,B15003_025E,B17001_001E,B17001_002E,B23025_003E,B23025_005E&for=county:097&in=state:18
- Published by Olympus on Oct 22, 2026.
- Source data: U.S. Census Bureau. Works of the U.S. government are not subject to copyright in the United States.
- This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
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curl -s "https://api.olympus.new-odyssey.com/v1/geo-demographics/counties/18097" -H "X-API-Key: $OLYMPUS_API_KEY"get_us_demographics {"county_fips":"18097"}