ZIP code · Mertztown · Pennsylvania · United States
ZIP code 19539 — Mertztown
ZIP code 19539 serves Mertztown, Pennsylvania.
- Postal code
- 19539Single source Value from one source, not cross-checked.
- City
- Mertztown
- County
- Berks FIPS 42011
- State
- Pennsylvania
- Country
- United States
- Coordinates
- 40.4992, -75.6872 — precision precise (locality)
View on OpenStreetMap - Population
- 4,112 (ZCTA, ACS 5-year)
- Population density
- 190 / sq mi
- Land area
- 21.6 sq mi (56 km²) (ZCTA, ACS 5-year)
- Median household income
- $102,694
- Per-capita income
- $49,326
- Median age
- 43.8
- Households
- 1,591
- Housing units
- 1,607
- Median home value
- $264,300
- Median gross rent
- $975 / month
- Congressional districts
- PA-4 (also PA-7) (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 19539 with another ZIP · ZIPs within 25 miles · distance from 19539
Map of ZIP code 19539
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 20°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 38 | 41 | 49 | 62 | 72 | 80 | 85 | 83 | 77 | 65 | 53 | 43 |
| Avg low °F | 20 | 21 | 29 | 39 | 49 | 58 | 62 | 60 | 53 | 41 | 32 | 25 |
| Precip in | 3.4 | 2.8 | 3.9 | 4.1 | 3.8 | 4.5 | 5.4 | 4.4 | 4.8 | 4.3 | 3.6 | 3.8 |
NOAA 1991–2020 climate normals from the nearest station: RODALE RSCH CTR (4.0 mi) · NOAA NCEI
Places in ZIP 19539
- 5 schools
- 1 supermarkets
- 3 restaurants & cafés
- 3 parks
- 6 places of worship
- 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