ZIP code · Hennessey · Oklahoma · United States
ZIP code 73742 — Hennessey
ZIP code 73742 serves Hennessey, Oklahoma.
- Postal code
- 73742Single source Value from one source, not cross-checked.
- City
- Hennessey
- County
- Kingfisher FIPS 40073
- State
- Oklahoma
- Country
- United States
- Coordinates
- 36.0868, -97.8926 — precision precise (locality)
View on OpenStreetMap - Population
- 3,808 (ZCTA, ACS 5-year)
- Population density
- 17 / sq mi
- Land area
- 218.3 sq mi (565.5 km²) (ZCTA, ACS 5-year)
- Median household income
- $56,667
- Per-capita income
- $36,374
- Median age
- 35.2
- Households
- 1,398
- Housing units
- 1,687
- Median home value
- $179,400
- Median gross rent
- $913 / month
- Congressional district
- OK-3 (119th Congress)
- USDA hardiness zone
- 7a (0 to 5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
Tools: compare 73742 with another ZIP · ZIPs within 25 miles · distance from 73742
Map of ZIP code 73742
Climate — monthly normals
Warmest month Jul (avg high 95°F), coldest Jan (avg low 24°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 47 | 51 | 61 | 70 | 79 | 90 | 95 | 94 | 85 | 73 | 59 | 48 |
| Avg low °F | 24 | 27 | 35 | 44 | 55 | 65 | 70 | 68 | 60 | 47 | 35 | 26 |
| Precip in | 1.3 | 1.4 | 2.5 | 3.5 | 5.0 | 4.5 | 3.0 | 3.5 | 2.3 | 2.9 | 1.8 | 1.7 |
NOAA 1991–2020 climate normals from the nearest station: HENNESSEY 4 ESE (3.2 mi) · NOAA NCEI
Places in ZIP 73742
- 4 schools
- 1 doctors & dentists
- 1 supermarkets
- 4 restaurants & cafés
- 2 parks
- 7 playgrounds
- 1 post offices
- 12 places of worship
- 3 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