Residential delivery area · Pennsylvania
ZIP Code 16057: Slippery Rock, PA
ZIP code 16057 uses the postal name Slippery Rock, Pennsylvania and lies mostly in Butler County (86% of its land), reaching into Lawrence County and Mercer County (Census 2020 ZIP-county file). About 16,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $58,288 (Census Bureau, ACS 2020-2024). By Census place, its land lies in West Liberty (4%), Slippery Rock (2%) and Slippery Rock University (under 1%); 93% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Slippery Rock · its only residential ZIP
- County
- Butler County (86%); Lawrence County (13%); Mercer County (1%)
- Census places
- West Liberty (4%); Slippery Rock (2%); Slippery Rock University (under 1%) census-designated place
- Metro area
- Pittsburgh, PA
- House district
- PA-16 119th Congress
- State
- Pennsylvania
- Time zone
- Eastern
- Land area
- 88.7 sq mi · 177 people per sq mi
Where is ZIP code 16057?
16057 centers on 41.034°, -80.060° and covers 88.7 square miles of land plus 0.7 of water. It borders 10 ZIP codes: 16035, 16051, 16052, 16061, 16127, 16156, 16020, 16001, 16038, 16101.
The map draws ZIP code areas only. For the streets inside 16057, 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 16057 compare with the rest of Butler County?
| Measure | 16057 | In Butler County | In PA |
|---|---|---|---|
| People (ACS 2020-2024) | 15,718 | 5th of 36 | 277th of 1,833 |
| Median household income | $58k | 24th of 25 | 847th of 1,015 |
| Median home value | $243k | 14th of 27 | 419th of 1,069 |
Its median household income is higher than in 26% of U.S. residential ZIP codes, and it is denser than 61% 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 16057?
The 2020 Census counted 14,327 people in 16057; the ACS, which samples households over 2020-2024, estimates 15,718. Between the 2010 and 2020 censuses its population grew 3.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 15,718
- 2020 Census count
- 14,327+3.0% since 2010 (13,909)
- Households
- 5,194
- Median age
- 25.9
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 16057?
Of the 15,718 people the ACS estimates in 16057, 12.1% are under 18 and 13.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (90.3%).
- Under 1812.1%
- 18 to 6474.0%
- 65 and older13.9%
- White, not Hispanic90.3%
- Other or two or more6.0%
- Hispanic or Latino2.2%
- Black, not Hispanic1.0%
- Asian, not Hispanic0.6%
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 16057 earn?
Median household income is $58,288 (ACS 2020-2024), the 24th highest of the 25 ranked ZIP codes in Butler County. It is not measurably different from 2015-2019 ($63,002 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $58,288±$6,026
- Income per person
- $29,287
- Below the poverty line
- 21.1%
- Unemployed (of the labor force)
- 6.5%
- Adults 25+ with a bachelor's degree
- 25.7%
- Adjusted gross income per tax return, 2022
- $71,3474,930 returns; wages 67% 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 16057?
FHFA's house price index for 16057, built from repeat sales and appraisals of the same homes, rose 71% from 2015 to 2025 and rose 51% from 2020 to 2025, and moved +17.5% in 2025.
- Median home value (owners' estimate)
- $242,900
- Median gross rent
- $877
- Homes owned by their occupants
- 57.9%
- Housing units
- 6,151
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 16057?
227 business establishments had a location in this ZIP code in 2023, 2 fewer than in 2018; the most are in other services (except public administration) (ZIP Code Business Patterns).
- Other services (except public administration)39
- Construction29
- Health care and social assistance28
- Retail trade27
- Accommodation and food services23
- Professional, scientific, and technical services14
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 16057?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 16035 | Forestville | 252 | $54k | 5.6 mi |
| 16051 | Portersville | 3,119 | $89k | 7.5 mi |
| 16052 | Prospect | 2,215 | $82k | 9.3 mi |
| 16061 | West Sunbury | 2,564 | $75k | 9.4 mi |
| 16127 | Grove City | 15,117 | $72k | 9.6 mi |
| 16156 | Volant | 3,431 | $69k | 9.8 mi |
| 16020 | Boyers | 1,169 | $74k | 10.3 mi |
| 16001 | Butler | 39,234 | $64k | 10.5 mi |
| 16038 | Harrisville | 3,292 | $73k | 10.6 mi |
| 16101 | New Castle | 30,767 | $51k | 12.5 mi |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.