About ZIP Code 51003

ZIP code 51003 is assigned to Alton, Sioux County, Iowa, United States. It falls in the Central Time (CT) zone. The estimated population of this ZIP code area is 1,938 with a density of 13.8 people per square mile.

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Location Details

ZIP Code51003
CityAlton
CountySioux County
StateIowa
CountryUnited States
TimezoneCentral Time (CT)
Timezone IDAmerica/Chicago
Latitude42.9836
Longitude-95.9864
ZIP TypeStandard ZIP

Post Office

Address1022 3RD AVE
CityALTON
StateIA

Nearby ZIP Codes in Iowa

Frequently Asked Questions

What city is ZIP code 51003 in?

ZIP code 51003 is in Alton, Sioux County, Iowa, United States.

What county is ZIP code 51003 in?

ZIP code 51003 is in Sioux County, Iowa.

What timezone is ZIP code 51003 in?

ZIP code 51003 is in the Central Time (CT) zone (America/Chicago).

What is the population of ZIP code 51003?

The estimated population of ZIP code 51003 is 1,938 people with a density of 13.8 people per square mile.

What state is ZIP code 51003 in?

ZIP code 51003 is in Iowa (IA), United States.

📋 Data Source: United States Postal Service (USPS) & US Census Bureau (ZCTA data) · Public domain government data. For official ZIP code information visit tools.usps.com. Data is periodically updated but may not reflect the most recent changes.