County demographics · Pennsylvania
Chester County, Pennsylvania demographics
Chester County, Pennsylvania (county FIPS 42029) has a median household income of $127,208 (±$2,511) and a total population of 547,840 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. 46 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 | 547,840 | none (controlled estimate) | B01003 |
| Median age | 40.8 years | ±0.2 years | B01002 |
| Households | 204,774 | ±936 | B11001 |
| Median household income (inflation-adjusted to the final ACS year) | $127,208 | ±$2,511 | B19013 |
| Median value of owner-occupied housing units | $485,600 | ±$4,003 | B25077 |
| Median gross rent | $1,763 | ±$28 | B25064 |
| Owner-occupied share of occupied housing units | 75.1% | none (derived from several estimates) | B25003 (derived) |
| Renter-occupied share of occupied housing units | 25% | none (derived from several estimates) | B25003 (derived) |
| High school graduate or higher (age 25+) | 94.9% | none (derived from several estimates) | B15003 (derived) |
| Bachelor's degree or higher (age 25+) | 57.1% | none (derived from several estimates) | B15003 (derived) |
| Share of people below the poverty level | 6% | none (derived from several estimates) | B17001 (derived) |
| Unemployment rate (civilian labor force) | 3.8% | 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 | 42029 |
| Land area | 750.55 sq mi |
| Water area | 8.65 sq mi |
| Population density | 730 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 |
|---|---|---|---|
| 19320 | 10.9% | 100% | Yes |
| 19363 | 6.5% | 96.3% | Yes |
| 19382 | 6% | 97.4% | Yes |
| 19335 | 5.8% | 100% | Yes |
| 19355 | 5.1% | 100% | Yes |
| 19348 | 4.9% | 100% | Yes |
| 19465 | 4.7% | 100% | Yes |
| 19330 | 4.5% | 100% | Yes |
| 19344 | 4.3% | 97.4% | Yes |
| 19380 | 4.1% | 100% | Yes |
| 19390 | 3.9% | 100% | Yes |
| 19520 | 3.8% | 77% | Yes |
| 19460 | 3.8% | 81.6% | Yes |
| 19350 | 3.7% | 100% | Yes |
| 19343 | 3.7% | 100% | Yes |
| 19425 | 3.6% | 100% | Yes |
| 19362 | 2.4% | 61.4% | Yes |
| 19352 | 2.3% | 100% | Yes |
| 19365 | 2.2% | 100% | Yes |
| 19475 | 2.2% | 100% | Yes |
| 19341 | 1.8% | 100% | Yes |
| 19311 | 1.7% | 100% | Yes |
| 19317 | 1.7% | 56.8% | Yes |
| 19310 | 1.6% | 92.5% | Yes |
| 19312 | 1.2% | 95.8% | Yes |
| 19087 | 1% | 50% | Yes |
| 19073 | 0.6% | 21.4% | |
| 19333 | 0.5% | 100% | Yes |
| 19301 | 0.5% | 100% | Yes |
| 19374 | 0.2% | 100% | Yes |
| 17527 | 0.2% | 5.9% | |
| 19372 | 0.1% | 100% | Yes |
| 19316 | 0.1% | 100% | Yes |
| 19342 | 0.1% | 3.3% | |
| 19543 | 0.1% | 2.3% | |
| 19375 | 0.1% | 100% | Yes |
| 19383 | 0.1% | 100% | Yes |
| 19345 | 0% | 100% | Yes |
| 17555 | 0% | 1% | |
| 19457 | 0% | 100% | Yes |
| 19319 | 0% | 25.6% | |
| 19367 | 0% | 100% | Yes |
| 19358 | 0% | 100% | Yes |
| 19373 | 0% | 4% | |
| 19442 | 0% | 100% | Yes |
| 19369 | 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:029&in=state:42
- 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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The same figures, with provenance on every value, from the API (free API key, reference) or from an AI agent through the Olympus MCP server.
curl -s "https://api.olympus.new-odyssey.com/v1/geo-demographics/counties/42029" -H "X-API-Key: $OLYMPUS_API_KEY"get_us_demographics {"county_fips":"42029"}