Zip Code Database List
Account Login
Find ZIP+4 of Address

Find the ZIP Code, County, and +4 of any U.S. Address

FREE ZIP Code Finder

Find info on any U.S. ZIP Code

Other FREE Lookups

Lookup ZIP Code of any City, State, County or Area Code

FREE Radius Search

Find all ZIP Codes

FREE Distance Calc

Calculate the distance between two U.S. or Canadian ZIP codes.

ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

ZIP Codes for City of Mills, WY

Need a ZIP Code for Mills, WY? Please enter an address.

Counties:NATRONA, WY
Area Code(s):307
Timezone(s):Mountain (GMT -07:00)
City Population:3,461 (More Details)
CBSA:Casper, WY
Congressional District(s):No Districts
Land Area:5,341 square miles (county)
Water Area:35 square miles (county)

2 ZIP Codes

Mills, WY ZIP Code Boundaries

Download ZIP Code Database

Mills, WY Covers 2 ZIP Codes

ZIP CodeTypePopulation% of PopulationAliases
82604Standard25,88294.59%MILLS, MONETA
82644P.O. Box1,4805.41%

Mills, WY Demographic Information *

Total population**3,461
Male population1,747
Female population1,714
Median age (years)38.6
White Population3,252
Black Population15
Indian Population52
Asian Population6
Hawaiian Population0
Hispanic Population226
Median age (Male)39.1
Median age (Female)37.7
Total households1,513
Family households (families)894
Average household size2.29
Average family size2.82
Total housing units1,654
* Demographic data is based on 2010 Census for the City of MILLS.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],