ZIP code · Berwick · Pennsylvania · United States
ZIP code 18603 — Berwick
ZIP code 18603 serves Berwick, Pennsylvania.
- Postal code
- 18603Single source Value from one source, not cross-checked.
- City
- Berwick
- County
- Columbia FIPS 42037
- State
- Pennsylvania
- Country
- United States
- Coordinates
- 41.0665, -76.2443 — precision precise (locality)
View on OpenStreetMap - Population
- 18,985 (ZCTA, ACS 5-year)
- Population density
- 356 / sq mi
- Land area
- 53.4 sq mi (138.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $55,969
- Per-capita income
- $32,507
- Median age
- 47
- Households
- 8,336
- Housing units
- 9,235
- Median home value
- $164,500
- Median gross rent
- $789 / month
- Congressional district
- PA-9 (119th Congress)
- USDA hardiness zone
- 6b (-5 to 0 °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)
Tools: compare 18603 with another ZIP · ZIPs within 25 miles · distance from 18603
Map of ZIP code 18603
Climate — monthly normals
Warmest month Jul (avg high 80°F), coldest Jan (avg low 16°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 33 | 36 | 44 | 58 | 69 | 76 | 80 | 78 | 72 | 60 | 48 | 38 |
| Avg low °F | 16 | 18 | 25 | 35 | 46 | 55 | 58 | 57 | 50 | 39 | 31 | 22 |
| Precip in | 3.2 | 2.5 | 3.4 | 4.4 | 4.7 | 4.5 | 4.5 | 4.5 | 4.9 | 4.8 | 3.4 | 3.6 |
NOAA 1991–2020 climate normals from the nearest station: BENTON 3 NE (12.6 mi) · NOAA NCEI
Places in ZIP 18603
- 3 schools
- 4 hospitals & clinics
- 1 doctors & dentists
- 1 pharmacies
- 4 supermarkets
- 24 restaurants & cafés
- 5 parks
- 7 playgrounds
- 4 gyms & sports centres
- 1 libraries
- 1 post offices
- 18 places of worship
- 7 banks
- 6 gas stations
- 2 EV charging stations
- 5 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