Residential delivery area · Pennsylvania
ZIP Code 15857: Saint Marys, PA
ZIP code 15857 uses the postal name Saint Marys, Pennsylvania and lies entirely in Elk County (Census 2020 ZIP-county file). About 13,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $67,662 (Census Bureau, ACS 2020-2024). Most of its land (99%) lies in the city of St. Marys.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Saint Marys · its only residential ZIP
- County
- Elk County
- Census places
- St. Marys
- Micro area
- St. Marys, PA
- House district
- PA-15 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 100.5 sq mi · 127 people per sq mi
Where is ZIP code 15857?
15857 centers on 41.455°, -78.520° and covers 100.5 square miles of land plus 0.2 of water. It borders 7 ZIP codes: 15821, 15846, 15870, 15845, 15834, 15868, 15853.
The map draws ZIP code areas only. For the streets inside 15857, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 15857 compare with the rest of Elk County?
| Measure | 15857 | In Elk County | In PA |
|---|---|---|---|
| People (ACS 2020-2024) | 12,736 | 1st of 15 | 340th of 1,833 |
| Median household income | $68k | 4th of 9 | 635th of 1,015 |
| Median home value | $150k | 2nd of 9 | 875th of 1,069 |
Its median household income is higher than in 43% of U.S. residential ZIP codes, and it is denser than 57% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 15857?
The 2020 Census counted 12,906 people in 15857; the ACS, which samples households over 2020-2024, estimates 12,736. Between the 2010 and 2020 censuses its population fell 2.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 12,736
- 2020 Census count
- 12,906−2.3% since 2010 (13,212)
- Households
- 5,756
- Median age
- 50.9
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 15857?
Of the 12,736 people the ACS estimates in 15857, 17.1% are under 18 and 26.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (93.8%).
- Under 1817.1%
- 18 to 6456.6%
- 65 and older26.4%
- White, not Hispanic93.8%
- Other or two or more3.2%
- Hispanic or Latino1.5%
- Black, not Hispanic1.3%
- Asian, not Hispanic0.2%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 15857 earn?
Median household income is $67,662 (ACS 2020-2024), the 4th highest of the 9 ranked ZIP codes in Elk County. It is not measurably different from 2015-2019 ($65,343 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $67,662
- Income per person
- $37,095
- Below the poverty line
- 7.7%
- Unemployed (of the labor force)
- 7.5%
- Adults 25+ with a bachelor's degree
- 21.5%
- Adjusted gross income per tax return, 2022
- $69,6366,540 returns; wages 65% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 15857?
FHFA's house price index for 15857, built from repeat sales and appraisals of the same homes, rose 60% from 2015 to 2025 and rose 41% from 2020 to 2025, and moved +5.0% in 2025.
- Median home value (owners' estimate)
- $150,100
- Median gross rent
- $762
- Homes owned by their occupants
- 77.9%
- Housing units
- 6,394
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 15857?
475 business establishments had a location in this ZIP code in 2023, 12 more than in 2018; the most are in manufacturing (ZIP Code Business Patterns).
- Manufacturing72
- Health care and social assistance65
- Retail trade62
- Other services (except public administration)55
- Accommodation and food services44
- Construction38
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 15857?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 15821 | Benezett | 74 | $55k | 8.6 mi |
| 15846 | Kersey | 3,408 | $71k | 9.2 mi |
| 15870 | Wilcox | 1,109 | $64k | 9.4 mi |
| 15845 | Johnsonburg | 3,121 | $68k | 10.3 mi |
| 15834 | Emporium | 4,015 | $51k | 10.7 mi |
| 15868 | Weedville | 1,435 | $70k | 12.1 mi |
| 15853 | Ridgway | 6,420 | $59k | 14.7 mi |
| 15831 | Dagus Mines | 58 | – | 8.3 mi (near) |
| 15827 | Byrnedale | 301 | $83k | 11.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.