Find the last 4 digits (ZIP+4) for an address in 73503

ZIP 73503, Fort Sill, OK is filled in. Just type the street address.

Addresses are checked through our secure proxy. Bot checks use Cloudflare Turnstile. Each device can run 5 live checks per day; repeats of the same address are free.

ZIP Code 73503 – Fort Sill, OK

Fort Sill, Oklahoma · Comanche County · Central time

ZIP code73503
CityFort Sill
StateOklahoma
CountyComanche County
Population11,468
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area74.19 sq mi
Center (lat, long)34.6830, -98.4918

Area codes in this area

580

These are the area codes that most often serve ZIP 73503 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

73507 Lawton · 3.3 mi73557 Medicine Park · 3.4 mi73506 Lawton · 4.1 mi73505 Lawton · 7.6 mi73502 Lawton · 7.7 mi73558 Meers · 8.5 mi73538 Elgin · 8.9 mi73527 Cache · 10.3 mi

About ZIP 73503

ZIP code 73503 is assigned to Fort Sill, Oklahoma. It lies in Comanche County. Its Census area covers about 74.19 square miles of land. The closest neighboring ZIP is 73507 (Lawton), about 3.3 miles away.

Every address in 73503 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources