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Zip Code 80123 — Littleton, CO

ZIP Code 80123 is associated with Littleton, CO, in Jefferson County. The listed population estimate is 44,549; estimated density is 1,430.7 people per square mile. Among records with population estimates, it ranks #1 of 26 in Jefferson County and #22 of 512 in CO.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (39.615780, -105.069200)

Data MetricLocal Statistic
Postal / Zip Code80123
Primary CityLittleton
State / ProvinceCO
CountyJefferson
Total Population44,549
Population Density1,430.7 people/sq mi
TimezoneAmerica/Denver

How 80123 Compares

MetricZIP 80123Jefferson County recordsCO records
Population estimate44,549600,818 (sum)5,862,421 (sum)
Population Density1,430.7 /sq mi----
County population rank#1 of 26----
State population rank#22 of 512----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in CO

ZIP CodeCityDistancePopulation estimate
ZIP 80235Denver2.4 mi8,373
ZIP 80236Denver2.9 mi16,863
ZIP 80120Littleton3.6 mi29,725
ZIP 80128Littleton3.8 mi36,712
ZIP 80227Denver3.8 mi34,907

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →