County demographics · Pennsylvania
Fayette County, Pennsylvania demographics
Fayette County, Pennsylvania (county FIPS 42051) has a median household income of $58,236 (±$2,045) and a total population of 125,997 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. 65 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 | 125,997 | none (controlled estimate) | B01003 |
| Median age | 45.4 years | ±0.2 years | B01002 |
| Households | 55,182 | ±708 | B11001 |
| Median household income (inflation-adjusted to the final ACS year) | $58,236 | ±$2,045 | B19013 |
| Median value of owner-occupied housing units | $143,200 | ±$5,445 | B25077 |
| Median gross rent | $793 | ±$18 | B25064 |
| Owner-occupied share of occupied housing units | 72.4% | none (derived from several estimates) | B25003 (derived) |
| Renter-occupied share of occupied housing units | 27.6% | none (derived from several estimates) | B25003 (derived) |
| High school graduate or higher (age 25+) | 90.2% | none (derived from several estimates) | B15003 (derived) |
| Bachelor's degree or higher (age 25+) | 19.1% | none (derived from several estimates) | B15003 (derived) |
| Share of people below the poverty level | 16.8% | none (derived from several estimates) | B17001 (derived) |
| Unemployment rate (civilian labor force) | 6.3% | 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 | 42051 |
| Land area | 790.76 sq mi |
| Water area | 7.97 sq mi |
| Population density | 159 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 |
|---|---|---|---|
| 15437 | 8.2% | 100% | Yes |
| 15478 | 7.9% | 100% | Yes |
| 15431 | 7.3% | 100% | Yes |
| 15425 | 7.3% | 100% | Yes |
| 15401 | 7% | 100% | Yes |
| 15464 | 5.7% | 100% | Yes |
| 15469 | 4.2% | 100% | Yes |
| 15459 | 4.1% | 100% | Yes |
| 15470 | 3.7% | 100% | Yes |
| 15473 | 2.8% | 100% | Yes |
| 15486 | 2.8% | 100% | Yes |
| 15445 | 2.7% | 100% | Yes |
| 15428 | 2.6% | 100% | Yes |
| 15440 | 2.4% | 100% | Yes |
| 15424 | 2.2% | 24.8% | |
| 15442 | 2.1% | 100% | Yes |
| 15480 | 2% | 100% | Yes |
| 15433 | 1.9% | 100% | Yes |
| 15458 | 1.9% | 100% | Yes |
| 15622 | 1.7% | 36.9% | Yes |
| 15610 | 1.6% | 32.7% | |
| 15666 | 1.6% | 23.9% | |
| 15468 | 1.5% | 100% | Yes |
| 15438 | 1.4% | 100% | Yes |
| 15461 | 1.4% | 100% | Yes |
| 15417 | 1.3% | 49.5% | |
| 15451 | 1.2% | 100% | Yes |
| 15490 | 1.2% | 100% | Yes |
| 15410 | 1.2% | 100% | Yes |
| 15474 | 1% | 100% | Yes |
| 15456 | 1% | 100% | Yes |
| 15436 | 0.8% | 100% | Yes |
| 15012 | 0.6% | 14.9% | |
| 15683 | 0.4% | 18.9% | |
| 15449 | 0.3% | 100% | Yes |
| 15447 | 0.3% | 100% | Yes |
| 15443 | 0.3% | 100% | Yes |
| 15462 | 0.2% | 100% | Yes |
| 15455 | 0.2% | 100% | Yes |
| 15489 | 0.2% | 100% | Yes |
| 15454 | 0.2% | 100% | Yes |
| 15475 | 0.1% | 100% | Yes |
| 15465 | 0.1% | 100% | Yes |
| 15450 | 0.1% | 100% | Yes |
| 15484 | 0.1% | 100% | Yes |
| 15482 | 0.1% | 100% | Yes |
| 15416 | 0.1% | 100% | Yes |
| 15557 | 0.1% | 0.8% | |
| 15463 | 0.1% | 100% | Yes |
| 15467 | 0.1% | 100% | Yes |
| 15492 | 0.1% | 100% | Yes |
| 15631 | 0.1% | 100% | Yes |
| 15413 | 0.1% | 100% | Yes |
| 15420 | 0.1% | 100% | Yes |
| 15444 | 0.1% | 100% | Yes |
| 15476 | 0.1% | 100% | Yes |
| 15488 | 0.1% | 100% | Yes |
| 15446 | 0% | 100% | Yes |
| 15460 | 0% | 100% | Yes |
| 15430 | 0% | 100% | Yes |
| 15422 | 0% | 100% | Yes |
| 15421 | 0% | 100% | Yes |
| 15466 | 0% | 100% | Yes |
| 15472 | 0% | 100% | Yes |
| 15435 | 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:051&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/42051" -H "X-API-Key: $OLYMPUS_API_KEY"get_us_demographics {"county_fips":"42051"}