ZIP code · West Middlesex · Pennsylvania · United States
ZIP code 16159 — West Middlesex
ZIP code 16159 serves West Middlesex, Pennsylvania.
- Postal code
- 16159Single source Value from one source, not cross-checked.
- City
- West Middlesex
- County
- Mercer FIPS 42085
- State
- Pennsylvania
- Country
- United States
- Coordinates
- 41.1741, -80.4528 — precision precise (locality)
View on OpenStreetMap - Population
- 4,664 (ZCTA, ACS 5-year)
- Population density
- 166 / sq mi
- Land area
- 28.1 sq mi (72.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $70,482
- Per-capita income
- $37,984
- Median age
- 51.9
- Households
- 2,122
- Housing units
- 2,276
- Median home value
- $169,700
- Median gross rent
- $800 / month
- Congressional district
- PA-16 (119th Congress)
- USDA hardiness zone
- 6a (-10 to -5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
- Area code
- 724Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 16159 with another ZIP · ZIPs within 25 miles · distance from 16159
Map of ZIP code 16159
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 19°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 37 | 40 | 49 | 63 | 73 | 82 | 86 | 85 | 79 | 66 | 53 | 42 |
| Avg low °F | 19 | 20 | 27 | 36 | 47 | 56 | 60 | 59 | 52 | 41 | 32 | 25 |
| Precip in | 2.9 | 2.2 | 3.1 | 3.6 | 3.9 | 4.5 | 4.5 | 3.9 | 3.9 | 3.2 | 3.0 | 3.1 |
NOAA 1991–2020 climate normals from the nearest station: NEW CASTLE 1 N (11.9 mi) · NOAA NCEI
Places in ZIP 16159
- 1 schools
- 3 restaurants & cafés
- 3 parks
- 2 playgrounds
- 2 post offices
- 1 places of worship
- 1 banks
- 1 gas stations
- 1 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page