Thornton, CO ZIP Codes

6 ZIP codes serve Thornton, Colorado: 80229, 80233, 80602, 80260, 80241 and 80023. Together they are home to 244,218 residents in 87,099 households. That is more than the 144,187 people counted inside Thornton city limits, because these ZIP codes reach past its boundary. Median household income ranges from $61,852 in 80260 to $158,180 in 80023.

Thornton city limits (Census)

MeasureCensus figure
Residents144,187
Households50,566
Median household income$103,088
Median home value$517,500
Median age34.7
Median rent$1,895

All 6 ZIP codes together

MeasureValue
Residents (sum of ZIP codes)244,218
Households (sum of ZIP codes)87,099
Median household income, range across ZIP codes$61,852 (80260) to $158,180 (80023)
Household-weighted average of ZIP medians (an approximation, not a true median)$105,736
Homeowners71.3%
Households with kids under 1835.2%
Moved in the past year13.9%
Carrier routes in EDDM2GO's route library130 routes, 93,924 homes (6 of 6 ZIP codes)

Top facts

Every ZIP code in Thornton

ZIPMailing cityResidentsHouseholdsMedian incomeHome valueHomeownersWith kidsNew moversCarrier routesMailboxesWhy listed
80229Denver55,09219,434$84,203$417,50065.7%35.8%16.7%2620,34855% of its land
80233Denver48,44118,071$88,880$465,40062.1%29.6%16.1%2719,02650% of its land
80602Brighton44,78314,310$151,737$667,00092.2%43.1%8.4%2516,81141% of its land
80260Denver34,67712,224$61,852$223,20062.4%34.2%14.0%1613,47044% of its land
80241Thornton34,08212,679$110,218$542,10074.6%34.9%14.1%1814,11797% of its land; mailing city
80023Broomfield27,14310,381$158,180$869,00075.2%34.5%13.3%1813,63214% of its land

A ZIP code is listed for Thornton when at least 10% of its land lies inside Thornton city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Thornton. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Thornton.

Counties

Nearby cities sharing these ZIP codes

Rankings

EDDM service areas in Thornton

Price a mailing to Thornton ZIP codes

EDDM guides

Pick carrier routes on the EDDM route map

Frequently asked questions

What ZIP codes are in Thornton, CO?
80229, 80233, 80602, 80260, 80241 and 80023. A ZIP code is listed for Thornton when at least 10% of its land lies inside Thornton city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Thornton.
What is the population of Thornton, CO?
The Census Bureau counts 144,187 residents inside Thornton city limits (ACS 2020–2024). The 6 ZIP codes that serve Thornton hold 244,218 residents in all.
What is the median household income in Thornton, CO?
$103,088 inside Thornton city limits, per the Census Bureau. Across its ZIP codes the medians run from $61,852 to $158,180.
Which Thornton ZIP code has the highest median household income?
80023, at $158,180, among ZIP codes with at least 1,000 residents. See the full ranking of Thornton ZIP codes by income.
How many carrier routes and mailboxes are in Thornton, CO?
For the 6 of 6 ZIP codes in EDDM2GO's stored route library: 130 carrier routes reaching 93,924 residential and 3,485 business mailboxes.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.