Thornton, Colorado ZIP Code - United States

The location Thornton, CO has 9 differents ZIP Codes. Check the map below to check your ZIP Code.

	City Name	ZIP Code	ZIP Type	Estimated Population
Thornton, CO	ACCEPTABLE	80023	STANDARD	10.898
Thornton, CO	ACCEPTABLE	80221	STANDARD	28.839
Thornton, CO	ACCEPTABLE	80229	STANDARD	37.272
Thornton, CO	ACCEPTABLE	80233	STANDARD	36.739
Thornton, CO	IMPROPER	80234	STANDARD	20.539
Thornton, CO	PRIMARY	80241	STANDARD	25.982
Thornton, CO	ACCEPTABLE	80260	STANDARD	21.814
Thornton, CO	IMPROPER	80601	STANDARD	26.250
Thornton, CO	ACCEPTABLE	80602	STANDARD	22.592

Postal Zone of Thornton, CO - USA

Thornton, CO belongs to Broomfield county. Check the list of Broomfield county ZIP Code.

Check the list of Colorado ZIP Code.

If you want to restart your search by state, get back to US ZIP Code.

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.
IMPROPER/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.