LatestCoverageAll 50 states, D.C. and five territories now on the ledger|NewPuerto Rico's 78 municipios ledgered, municipio by municipio|FeatureAssessment appeal workspace — build a filing package from your own evidence|FeatureLiving reports — versioned, re-runnable, exportable|DevelopersMetered REST gateway · issued keys · signed webhooks|Live market readings · refreshed on loadAlbuquerque · NMMedian List$360K+2.5%|Austin · TXMedian List$550K-1.0%|Baltimore · MDMedian List$225K-6.3%|Bernalillo County · NMMedian List$364K+2.7%|Bexar County · TXMedian List$303K+3.7%|Boston · MAMedian List$859K+3.4%|Charlotte · NCMedian List$430K-0.1%|Chicago · ILMedian List$426K+9.3%|Clark County · NVMedian List$447K+0.1%|Columbus · OHMedian List$300K+0.6%|Cook County · ILMedian List$348K+5.1%|Dallas · TXMedian List$449K-0.1%|Davidson County · TNMedian List$481K+0.1%|Denver · COMedian List$569K+1.6%|Detroit · MIMedian List$105K-2.8%|Duval County · FLMedian List$297K-2.3%|El Paso · TXMedian List$260K+3.7%|Fort Worth · TXMedian List$332K-2.1%|Franklin County · OHMedian List$320K+3.2%|Fresno · CAMedian List$406K-2.3%|Harris County · TXMedian List$327K+0.6%|Houston · TXMedian List$340K+0.6%|Indianapolis · INMedian List$260K+2.3%|Jackson County · MOMedian List$275K+7.0%|Jacksonville · FLMedian List$309K-2.1%|Jefferson County · KYMedian List$248K-4.3%|Kansas City · MOMedian List$240K+4.3%|King County · WAMedian List$860K-4.2%|Las Vegas · NVMedian List$440K-1.1%|Los Angeles · CAMedian List$950K-0.5%|Louisville · KYMedian List$275K0.0%|Maricopa County · AZMedian List$458K-0.4%|Marion County · INMedian List$259K+3.7%|Mecklenburg County · NCMedian List$407K-5.3%|Memphis · TNMedian List$202K+2.5%|Mesa · AZMedian List$450K-3.1%|Milwaukee · WIMedian List$243K+5.7%|Multnomah County · ORMedian List$518K-1.2%|Nashville · TNMedian List$480K+1.0%|New York · NYMedian List$899K+0.5%|Oklahoma City · OKMedian List$275K-0.6%|Oklahoma County · OKMedian List$259K-0.7%|Philadelphia · PAMedian List$249K+0.3%|Phoenix · AZMedian List$480K0.0%|Pima County · AZMedian List$373K+0.9%|Portland · ORMedian List$640K-6.0%|Sacramento · CAMedian List$510K+4.0%|San Antonio · TXMedian List$236K-1.2%|San Diego · CAMedian List$994K+4.2%|San Francisco · CAMedian List$1.4M+1.7%|San Jose · CAMedian List$1.3M-11.9%|Santa Clara County · CAMedian List$1.3M+0.1%|Seattle · WAMedian List$874K-2.8%|Shelby County · TNMedian List$259K-2.4%|Suffolk County · MAMedian List$857K+7.3%|Tarrant County · TXMedian List$385K-1.2%|Travis County · TXMedian List$523K-0.3%|Tucson · AZMedian List$316K+2.7%|Wayne County · MIMedian List$229K+6.7%|LatestCoverageAll 50 states, D.C. and five territories now on the ledger|NewPuerto Rico's 78 municipios ledgered, municipio by municipio|FeatureAssessment appeal workspace — build a filing package from your own evidence|FeatureLiving reports — versioned, re-runnable, exportable|DevelopersMetered REST gateway · issued keys · signed webhooks|Live market readings · refreshed on loadAlbuquerque · NMMedian List$360K+2.5%|Austin · TXMedian List$550K-1.0%|Baltimore · MDMedian List$225K-6.3%|Bernalillo County · NMMedian List$364K+2.7%|Bexar County · TXMedian List$303K+3.7%|Boston · MAMedian List$859K+3.4%|Charlotte · NCMedian List$430K-0.1%|Chicago · ILMedian List$426K+9.3%|Clark County · NVMedian List$447K+0.1%|Columbus · OHMedian List$300K+0.6%|Cook County · ILMedian List$348K+5.1%|Dallas · TXMedian List$449K-0.1%|Davidson County · TNMedian List$481K+0.1%|Denver · COMedian List$569K+1.6%|Detroit · MIMedian List$105K-2.8%|Duval County · FLMedian List$297K-2.3%|El Paso · TXMedian List$260K+3.7%|Fort Worth · TXMedian List$332K-2.1%|Franklin County · OHMedian List$320K+3.2%|Fresno · CAMedian List$406K-2.3%|Harris County · TXMedian List$327K+0.6%|Houston · TXMedian List$340K+0.6%|Indianapolis · INMedian List$260K+2.3%|Jackson County · MOMedian List$275K+7.0%|Jacksonville · FLMedian List$309K-2.1%|Jefferson County · KYMedian List$248K-4.3%|Kansas City · MOMedian List$240K+4.3%|King County · WAMedian List$860K-4.2%|Las Vegas · NVMedian List$440K-1.1%|Los Angeles · CAMedian List$950K-0.5%|Louisville · KYMedian List$275K0.0%|Maricopa County · AZMedian List$458K-0.4%|Marion County · INMedian List$259K+3.7%|Mecklenburg County · NCMedian List$407K-5.3%|Memphis · TNMedian List$202K+2.5%|Mesa · AZMedian List$450K-3.1%|Milwaukee · WIMedian List$243K+5.7%|Multnomah County · ORMedian List$518K-1.2%|Nashville · TNMedian List$480K+1.0%|New York · NYMedian List$899K+0.5%|Oklahoma City · OKMedian List$275K-0.6%|Oklahoma County · OKMedian List$259K-0.7%|Philadelphia · PAMedian List$249K+0.3%|Phoenix · AZMedian List$480K0.0%|Pima County · AZMedian List$373K+0.9%|Portland · ORMedian List$640K-6.0%|Sacramento · CAMedian List$510K+4.0%|San Antonio · TXMedian List$236K-1.2%|San Diego · CAMedian List$994K+4.2%|San Francisco · CAMedian List$1.4M+1.7%|San Jose · CAMedian List$1.3M-11.9%|Santa Clara County · CAMedian List$1.3M+0.1%|Seattle · WAMedian List$874K-2.8%|Shelby County · TNMedian List$259K-2.4%|Suffolk County · MAMedian List$857K+7.3%|Tarrant County · TXMedian List$385K-1.2%|Travis County · TXMedian List$523K-0.3%|Tucson · AZMedian List$316K+2.7%|Wayne County · MIMedian List$229K+6.7%|
Property-class scope

The story of this market

The typical home in ZIP 80503 sells for about $712,000, or $315 per square foot.

Prices are down 3.2% from a year ago, which gives buyers more room to negotiate. Homes take about 49 days to sell. HUD's fair market rent for a two-bedroom is $2,200 a month.

ZIP market report · consumer edition · quarterly refresh
Track this ZIP

ZIP 80503 — Longmont

Boulder County →Boulder marketrefreshed Sep 25, 2026next refresh Oct 25, 2026
Market mood · cautiously optimistic

The 80503 housing market is showing signs of stabilization with a slight year-over-year price decline, reflecting broader regional trends. Demand remains steady, supported by a strong local economy and limited inventory, though buyers are increasingly price-sensitive.

Who this ZIP fits

This ZIP is ideal for families and professionals seeking a balance between suburban living and access to the outdoor amenities and employment hubs of Boulder County.

Parent geography
Aerial view · ZIP boundaries2020 Census ZCTA boundary over current aerial imagery
Leaflet Imagery © Esri, Maxar, Earthstar Geographics
Land area · 237.6 km²Water area · 7.8 km²U.S. Census Bureau TIGERweb — 2020 Census ZCTA5 boundary
Median sale price
$712,000
-3.2% year over year
Corroborated · 1 anchor · 0% off nearest
Days on market
49 days
Active listings
1,394
Sale-to-list ratio
98.2%
of asking price
ZIP Market ScoreZIP-SCORE-1.3 · 4/4 sections graded
72
Composite · average of graded sections
Computed only from this report's published readings — sections without data are excluded, never estimated.
34
Growth/100

Median prices moved down 3.2% year over year.

73
Liquidity/100

Homes spend a median of 49 days on market with 2.9 months of supply — a fast-moving market.

84
Momentum/100

0% of listings have cut prices · homes sell at 98.2% of asking — demand is running ahead of supply.

96
Safety & stability/100

no recorded foreclosure-ledger notices (0.0 per 10,000 residents) · unemployment 3.2% · poverty 4.0% — a stable, low-distress profile.

Median price · ten-year history

Researched annual trajectory for this ZIP, from published historical series

2016201720182019202020212022202320242025202620282030$450,000$600,000$750,000$900,000$1,050,000

Solid: researched ten-year history · dotted: 1 / 3 / 5-year projection extended from the historical 5.2%/yr trend — a deterministic estimate, not a published forecast or guarantee.

Property tax · ten-year history

Median annual property tax paid on this ZIP's residential parcels

2016201720182019202020212022202320242025202620282030$2,400$3,200$4,000$4,800$5,600

Solid: researched ten-year history · dotted: 1 / 3 / 5-year projection extended from the historical 5.8%/yr trend — a deterministic estimate, not a published forecast or guarantee.

Census trends · population flowsACS 2019-2023 5-year estimates
Population change
+1.2%

versus the prior ACS vintage

Population base
35,863

ZCTA 80503, Boulder County CO

Immigration & foreign-bornU.S. Census Bureau ACS · ZIP granular
Foreign-born share
7.7%
Foreign-born residents
2,768
Naturalized (of foreign-born)
65.5%
Non-citizens (of population)
2.7%
Entered 2010 or later (of foreign-born)
24.8%
World region of birth (foreign-born)
Asia
43.9%
Europe
32.3%
Americas
16%
Oceania
4.3%
Africa
3.5%

ACS 2024 5-year estimates. Aggregate published statistics for this ZIP — never individual records, and never an attribute of any individual property or resident.

Area context
Crime & safety

Crime rates in the area remain relatively low compared to national averages, with local law enforcement reporting stable trends in property and violent crime.

Schools & education

The area is served by highly-rated public school districts, consistently recognized for strong academic performance and college readiness metrics.

Environmental & hazard

The region faces elevated risks from wildfires and high-wind events, leading to increasingly stringent insurance requirements and rising premiums for homeowners.

Growth & development

Economic momentum is driven by proximity to the Boulder and Denver tech corridors, with ongoing infrastructure improvements supporting residential expansion.

Taxation

Composed from the ARED governance burden registry — tier-native tax structure (state + county + city + special districts), never averaged. State (Colorado) — Statutory Agricultural Land Reclassification and Improvement Valuation: Under C.R.S. § 39-1-102(1.6)(a)(I), up to two acres of land directly underlying a residential improvement on agricultural parcels are segregated and assessed at residential rates (6.80% / 7. State (Colorado) — Senior and Disabled Veteran Property Tax Homestead Exemption: Exempts 50% of the first $200,000 of actual market value of the qualifying primary residential parcel from property taxation (a maximum actual value deduction of $100,000). State (Colorado) — Colorado Split Residential Property Tax Assessment Rate Structure: Imposes annual ad valorem property taxes determined using a bifurcated assessment rate system. Assessed Value = Actual (Market) Value × Assessment Rate. Beginning for tax years 2025/2026, residential property is assessed at 6.

Transportation & commute

Residents primarily commute via US-36 or local transit corridors toward Boulder and Denver, with average commute times reflecting regional traffic patterns.

Recreation & amenities

The area features extensive access to open space, hiking trails, and regional parks, with proximity to local shopping and dining hubs in Longmont.

Rental market

The rental market remains tight with low vacancy rates, driven by high demand from professionals and students in the broader Boulder County area.

Economy & employers

The economy is anchored by the tech, aerospace, and education sectors, with significant employment provided by the University of Colorado and regional research facilities.

Transportation & infrastructure

The area is served by regional bus transit and major highway corridors connecting to the Denver metropolitan area.

Development pipeline

Development is focused on mixed-use residential projects and infrastructure upgrades to accommodate population growth.

County appraisal district

The county appraisal district conducts biennial assessments to determine property values for tax purposes.

Special districts

Parcels are subject to various special districts including school, fire protection, and water/sanitation districts.

Insurance & hazard market

Property insurance premiums are rising due to increased wildfire risk and regional climate-related hazard exposure.

Discovery profileACS 2019-2023 5-year estimates
Census profile · ZCTA 80503, Boulder County CO
Population
35,863
Median age
42.5 yrs
Owner-occupancy
72%
Median home value
$755,500
Median gross rent
$1,850
Median household income
$115,000
Median year built
1995
Vacancy rate
4.5%
Renter share
28%
Owner cost burden
25%
Renter cost burden
35%
Population change
+1.2%
Work-from-home share
22%
Mean commute
28.5 min
Bachelor's or higher
65%
Unemployment
3.2%
Poverty rate
4%
Avg household size
2.42
White
85%
Hispanic
10%
Other
5%

Data retrieved from US Census Bureau ACS and DHC profiles.

Public schools · 1
St. Vrain Valley SchoolsDistrictHighSt. Vrain Valley School DistrictPrevailing district serving the area with high academic ratings.
School districts
St. Vrain Valley School DistrictHighLarge district serving the Longmont and surrounding areas.
Utilities & services
ElectricXcel EnergyPrimary provider for the region.
Natural GasXcel EnergyPrimary provider for the region.
Major employers & industries
University of ColoradoEducationMajor regional employer.
Major amenities · ZIP 80503
Theme, amusement & water parks
19 · 20 mi
Entertainment venues, stadiums & amphitheaters
14 · 20 mi
Family fun & things to do
19 · 13 mi
Museums, galleries & history
17 · 20 mi
Parks, trails & nature
19 · 13 mi
Lakes, marinas & beaches
1 · 20 mi
Shopping & dining districts
10 · 13 mi
Airports
1 · 31 mi

Theme parks, venues, golf, airports, museums, water and shopping across the area from Google Maps, ranked by popularity within the radius shown.

Amenities & attractions1 retained amenity · 1 development on the horizon
Inside this ZIP
Boulder County Open Space
Park

Extensive network of trails and protected natural areas.

On the horizon · announced & under construction
Regional Infrastructure ExpansionInfrastructureOngoingMajor road and transit improvements to support regional growth.
Sources · 6 cited

Key-figure check: no independent anchor retained yet — first-researched cycles establish the anchor baseline this pass.