ZIP code · Portland · Ohio · United States
ZIP code 45770 — Portland
ZIP code 45770 serves Portland, Ohio.
- Postal code
- 45770Single source Value from one source, not cross-checked.
- City
- Portland
- County
- Meigs FIPS 39105
- State
- Ohio
- Country
- United States
- Coordinates
- 38.9999, -81.8135 — precision precise (locality)
View on OpenStreetMap - Population
- 765 (ZCTA, ACS 5-year)
- Population density
- 35 / sq mi
- Land area
- 21.8 sq mi (56.6 km²) (ZCTA, ACS 5-year)
- Median household income
- $43,528
- Per-capita income
- $29,340
- Median age
- 49.3
- Households
- 305
- Housing units
- 319
- Median home value
- $120,800
- Congressional district
- OH-2 (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)
- Area code
- 740Telephone 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 45770 with another ZIP · ZIPs within 25 miles · distance from 45770
Map of ZIP code 45770
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 | 40 | 45 | 54 | 67 | 75 | 82 | 85 | 85 | 79 | 68 | 55 | 44 |
| Avg low °F | 20 | 22 | 28 | 37 | 47 | 56 | 60 | 59 | 52 | 40 | 30 | 25 |
| Precip in | 3.4 | 3.5 | 4.3 | 4.0 | 4.8 | 4.8 | 5.2 | 4.0 | 3.8 | 3.3 | 3.0 | 3.9 |
NOAA 1991–2020 climate normals from the nearest station: SANDYVILLE 9 NE (13.4 mi) · NOAA NCEI
Places in ZIP 45770
- 1 schools
- 1 parks
- 1 post offices
- 3 places of worship
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