ZIP code · South Montrose · Pennsylvania · United States
ZIP code 18843 — South Montrose
ZIP code 18843 serves South Montrose, Pennsylvania.
- Postal code
- 18843Single source Value from one source, not cross-checked.
- City
- South Montrose
- County
- Susquehanna FIPS 42115
- State
- Pennsylvania
- Country
- United States
- Coordinates
- 41.7973, -75.8913 — precision precise (locality)
View on OpenStreetMap - Population
- 349 (ZCTA, ACS 5-year)
- Population density
- 250 / sq mi
- Land area
- 1.4 sq mi (3.6 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $33,842
- Median age
- 62.3
- Households
- 159
- Housing units
- 164
- Median home value
- $203,800
- Congressional district
- PA-9 (119th Congress)
- USDA hardiness zone
- 5b (-15 to -10 °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 18843 with another ZIP · ZIPs within 25 miles · distance from 18843
Map of ZIP code 18843
Climate — monthly normals
Warmest month Jul (avg high 80°F), coldest Jan (avg low 13°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 31 | 33 | 41 | 55 | 67 | 75 | 80 | 79 | 71 | 59 | 47 | 36 |
| Avg low °F | 13 | 13 | 21 | 32 | 42 | 52 | 56 | 54 | 47 | 36 | 27 | 19 |
| Precip in | 3.4 | 2.8 | 3.6 | 4.1 | 4.3 | 4.6 | 4.6 | 3.8 | 4.5 | 4.1 | 3.3 | 3.6 |
NOAA 1991–2020 climate normals from the nearest station: MONTROSE (4.1 mi) · NOAA NCEI
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