Find the last 4 digits (ZIP+4) for an address in 51240

ZIP 51240, Inwood, IA is filled in. Just type the street address.

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ZIP Code 51240 – Inwood, IA

Inwood, Iowa · Lyon County · Central time

ZIP code51240
CityInwood
StateIowa
CountyLyon CountySioux County
Population1,914
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area100.43 sq mi
Center (lat, long)43.3094, -96.4584

Area codes in this area

712

These are the area codes that most often serve ZIP 51240 (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

51230 Alvord · 7.6 mi57013 Canton · 8.6 mi57027 Fairview · 8.7 mi51241 Larchwood · 9.8 mi51247 Rock Valley · 10 mi51242 Lester · 10.4 mi51235 Doon · 12.2 mi57032 Harrisburg · 13.6 mi

About ZIP 51240

ZIP code 51240 is assigned to Inwood, Iowa. It crosses 2 counties; most of its land is in Lyon County. Its Census area covers about 100.43 square miles of land. The closest neighboring ZIP is 51230 (Alvord), about 7.6 miles away.

Every address in 51240 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