Northwest Denver region and foothills

Boulder County Guide

Boulder County combines the City of Boulder, university and research employment, established towns, fast-growing north-county communities, open space, and mountain areas. Limited land and strong demand create very different housing economics from much of the metro.

Seven-county Denver metro location overlay on a road map — A translucent county overlay makes I-25, I-70, and the seven-county layout visible together. Verify exact boundaries and parcels with official county GIS records.

Incorporated cities and towns

Which cities are in Boulder County?

BoulderCity →ErieTown →LafayetteCity →LongmontCity →LouisvilleCity →LyonsTown →NederlandTown →SuperiorTown →

Some municipalities cross county lines; inclusion does not mean the entire city lies in this county. Mailing names also do not establish county jurisdiction—verify the parcel.