Find the last 4 digits (ZIP+4) for an address in 61437

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ZIP Code 61437 – Gladstone, IL

Gladstone, Illinois · Henderson County · Central time

ZIP code61437
CityGladstone
StateIllinois
CountyHenderson County
Population549
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area37.76 sq mi
Center (lat, long)40.8470, -90.9921

Area codes in this area

861

These are the area codes that most often serve ZIP 61437 (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

61418 Biggsville · 6.4 mi61425 Carman · 6.6 mi52601 Burlington · 7.2 mi61469 Oquawka · 8.7 mi61480 Stronghurst · 9.2 mi52650 Sperry · 11 mi52655 West Burlington · 11.6 mi61454 Lomax · 11.7 mi

About ZIP 61437

ZIP code 61437 is assigned to Gladstone, Illinois. It lies in Henderson County. Its Census area covers about 37.76 square miles of land. The closest neighboring ZIP is 61418 (Biggsville), about 6.4 miles away.

Every address in 61437 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