Find the last 4 digits (ZIP+4) for an address in 45820

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ZIP Code 45820 – Cairo, OH

Cairo, Ohio · Allen County · Eastern time

ZIP code45820
CityCairo
StateOhio
CountyAllen County
Population581
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area0.28 sq mi
Center (lat, long)40.8308, -84.0845

Area codes in this area

419567

These are the area codes that most often serve ZIP 45820 (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

45802 Lima · 4.4 mi45893 Vaughnsville · 4.7 mi45801 Lima · 4.8 mi45807 Lima · 4.9 mi45809 Gomer · 5.3 mi45830 Columbus Grove · 5.4 mi45808 Beaverdam · 5.8 mi45805 Lima · 8.2 mi

About ZIP 45820

ZIP code 45820 is assigned to Cairo, Ohio. It lies in Allen County. Its Census area covers about 0.28 square miles of land. The closest neighboring ZIP is 45802 (Lima), about 4.4 miles away.

Every address in 45820 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