80503 Property Tax Rate

Property owners in ZIP code 80503 (Longmont, Colorado) pay a median of $3,841/year in property taxes on homes valued at $704,800. This translates to an effective tax rate of 0.55%, which is 31% above the Colorado state average of 0.42%.

The monthly property tax burden for a median-valued home in 80503 is approximately $320, which factors into escrow payments on mortgages. This ZIP code is located within Boulder County. This is $1,959 more than the Colorado average of $1,882/year.

Compared to similar ZIP codes in Colorado, 80503 has higher property taxes. ZIP codes with similar effective rates include 80654 (0.55%) and 80528 (0.54%).

In Longmont, property taxes represent approximately 3.2% of the median household income of $118,465, providing context for the relative tax burden on homeowners in this area.

Colorado's Gallagher Amendment was repealed in 2020, eliminating statewide assessment caps; your property will reassess to current market value at sale, and mill levy growth is limited by TABOR. Boulder County offers a Senior Homestead Exemption for owners 65 or older who have resided in the home for 10+ years — apply through the Boulder County Assessor to reduce assessed value. File your exemption application with the Boulder County Assessor before April 15 of the year following your purchase if you meet age and residency requirements.