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61770 ZIP Code - United States

This ZIP Code belongs to the following areas. Below you can see the map of the postal area.

City City ZIP Type Estimated Population
Saybrook, IL PRIMARY Significado STANDARD 997

Postal Zone from ZIP Code 61770 - United States

61770 ZIP Code - United States
ZIP Code Tabulation Areas (ZCTAs) for 61770 ZIP Code. A ZCTA is a generalized area representation of the american ZIP Code service area.

61770 details

City Saybrook
County McLean
State Illinois
Estimated Population 1.046
Density 6,50
Timezone America/Chicago
Latitude 40.443230000
Longitude -88.525940000

Average county area weight on ZIP Code 61770

County FIP Weight
McLean 17113 100%

ZIP Code Illinois

Check the list of Illinois ZIP Code.

United States ZIP Code

See all the USA ZIP Code.

Status Definitions
  • PRIMARY: means an the primary city name. Official city name, although the city name might also have another acceptable name.
  • ACCEPTABLE: means an adequate city name. City names that are abbreviated will frequently be listed as unacceptable because abbreviations are not an acceptable city name format.
  • NOT ACCEPTABLE: Means an inadequate city name has been entered or received based on information entered.
  • UNIQUE: Assigned to a company, government agency, or entity with sufficient mail volume, based on average daily volume of letter size mail received, availability of ZIP Code numbers in the postal area, and the US mail service cost-benefit analysis.