Find the last 4 digits (ZIP+4) for an address in 61257

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ZIP Code 61257 – Hillsdale, IL

Hillsdale, Illinois · Rock Island County · Central time

ZIP code61257
CityHillsdale
StateIllinois
CountyRock Island County
Population844
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area41.26 sq mi
Center (lat, long)41.5934, -90.2218

Area codes in this area

861

These are the area codes that most often serve ZIP 61257 (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

61275 Port Byron · 4.5 mi61278 Rapids City · 5.9 mi61250 Erie · 7.1 mi61242 Cordova · 8.6 mi61236 Barstow · 8.8 mi52753 Le Claire · 8.8 mi61241 Colona · 8.9 mi61254 Geneseo · 9.5 mi

About ZIP 61257

ZIP code 61257 is assigned to Hillsdale, Illinois. It lies in Rock Island County. Its Census area covers about 41.26 square miles of land. The closest neighboring ZIP is 61275 (Port Byron), about 4.5 miles away.

Every address in 61257 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