Longmont, CO · standard
ZIP Code 80503
Boulder County, Colorado - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 31,064
- 132/sq mi High-density area
- $113,620
- Median income Above-median income area
- $755,500
- Median home value Above-median home value
- 59.9%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Longmont pairs an upper-quartile household income with top-decile home values, in a rural, homeowner-dominated area.
- Top 12%
- household income, US ZIPs
- Top 5%
- home value, US ZIPs
- 132
- people per sq mi
- 66%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 80503 against every reporting US ZIP.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 80503 (Longmont, CO) rose +4.8% from 2023 to 2024. The all-transactions index moved from 256.4 in 2023 to 268.6 in 2024 (2000 = 100).
ZIP code 80503 is a densely settled ZIP (a standard USPS delivery area) in Longmont, Boulder County, Colorado, with 31,064 residents across 235.9 square miles, a density of 132 people per square mile, in the Denver time zone.
ZIP 80503 skews affluent, with a median household income of $113,620 (28% above the average Colorado ZIP), while per-capita income is $64,526. Both reported hardship measures are comparatively low in absolute terms: poverty is 5.8% and unemployment is 3.5%. Housing is both higher-cost and owner-heavy: median home value is $755,500 (56% above the average Colorado ZIP), while 66.1% of occupied homes are owner-occupied and median rent is $1,872.
This is a highly-educated ZIP: 59.9% of adults hold a bachelor's degree or higher, the median age is 44.8, and the average commute is 23 minutes. The page also surfaces 5 ZIP codes within roughly 10 miles and 6 more in Boulder County, so 80503 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 80503
Top 5 sectors by establishment count in Longmont, CO
Which industries have the most business establishments in ZIP 80503.
- Professional, scientific, and technical services
Professional, scientific, and technical services
195 establishments
- Construction
Construction
88 establishments
- Health care and social assistance
Health care and social assistance
81 establishments
- Real estate and rental and leasing 68
Real estate and rental and leasing
68 establishments
- Other services (except public administration) 52
Other services (except public administration)
52 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 80503, Longmont, CO · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
31,064
Population
235.9
Area (sq mi)
132
People / sq mi
Denver
Time Zone
standard
ZIP Type
Who lives in ZIP 80503?
44.8
Median Age
49.2%
Male
50.8%
Female
7.7%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$113,620
Median Household Income
+28% vs state ZIP avg
$64,526
Per Capita Income
5.8%
Poverty Rate
3.5%
Unemployment Rate
23.1 min
Mean Commute Time
How ZIP 80503 ranks nationally
Longmont, CO household income vs. every US ZIP code
Median household income, the full national distribution, with this ZIP marked
$113,620 Top 12% higher than 88% of 30,318 US ZIPs
Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
15,737housing units
15,737
Total Housing Units
15,153
Occupied Units
584
Vacant Units
2.35
Avg Household Size
Occupancy Type
$755,500
Median Home Value
+56% vs state ZIP avg
$1,872
Median Rent
1994
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+4.8%
YoY Change (2024)
269
HPI Index (2000 = 100)
+169%
Total Change Since 2000
Home values in ZIP 80503 have increased 4.8% over the past year (2024). Since 2000, this ZIP has seen +169% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +1.8% | 194 |
| 2021 | +10.2% | 214 |
| 2022 | +19.6% | 256 |
| 2023 | +0.3% | 256 |
| 2024 | +4.8% | 269 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 767 business establishments in ZIP 80503, employing approximately 7,488 people with a combined annual payroll of $662,524,000.
767
Businesses
7,488
Employees
$662.5M
Annual Payroll
17
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Professional, scientific, and technical services | 195 | 25.4% |
| Construction | 88 | 11.5% |
| Health care and social assistance | 81 | 10.6% |
| Real estate and rental and leasing | 68 | 8.9% |
| Other services (except public administration) | 52 | 6.8% |
| Administrative and support and waste management and remediation services | 38 | 5.0% |
| Retail trade | 37 | 4.8% |
| Finance and insurance | 34 | 4.4% |
| Accommodation and food services | 33 | 4.3% |
| Wholesale trade | 29 | 3.8% |
| Manufacturing | 28 | 3.6% |
| Arts, entertainment, and recreation | 22 | 2.9% |
| Information | 21 | 2.7% |
| Educational services | 17 | 2.2% |
| Agriculture, forestry, fishing and hunting | 11 | 1.4% |
| Transportation and warehousing | 8 | 1.0% |
| Management of companies and enterprises | 3 | 0.4% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 80503 vs 80544 →
ZIP 80503 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 80501
Longmont (80501)
39,521 residents
- 80503
Longmont (80503)
31,064 residents
- 80304
Boulder (80304)
25,623 residents
- 80301
Boulder (80301)
22,555 residents
- 80513 10,296
Berthoud (80513)
10,296 residents
- 80544 111
Niwot (80544)
111 residents
What this shows Among its immediate neighbors, ZIP 80503 ranks #2 by population - useful context the national average alone can't give.
ZIP 80503 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 80513
Berthoud (80513)
$126,726 median income
- 80304
Boulder (80304)
$126,558 median income
- 80503
Longmont (80503)
$113,620 median income
- 80301
Boulder (80301)
$95,207 median income
- 80501
Longmont (80501)
$80,911 median income
What this shows By household income, ZIP 80503 ranks #3 of 5 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 80503, both outside CO so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (31,064 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Boulder County
Related Areas
Frequently Asked Questions
What county is ZIP code 80503 in?
ZIP code 80503 (Longmont) is located in Boulder County, Colorado. Boulder County contains multiple ZIP codes, see the full list at /counties/boulder-co.
What is the population of ZIP code 80503?
ZIP code 80503 in Longmont, CO has a population of 31,064 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 80503?
The median household income in ZIP 80503 is $113,620, which is 49% above the national average of $76,288.
What is the average home value in ZIP 80503?
The median home value in ZIP 80503 is $755,500, which is 172% above the national average of $278,155.
What is the demographic makeup of ZIP 80503?
The largest racial group in ZIP 80503 is White at 81.5%. Hispanic or Latino residents make up 10.2% of the population.
How many businesses are in ZIP code 80503?
ZIP code 80503 has 767 business establishments employing approximately 7,488 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 80503?
The top industries by establishment count in ZIP 80503 are: Professional, scientific, and technical services (195), Construction (88), Health care and social assistance (81). There are 17 industry sectors represented in total.
How have home values changed in ZIP code 80503?
According to the FHFA House Price Index, home values in ZIP 80503 increased by 4.8% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 169%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 80503?
In ZIP code 80503, 72.7% of residents aged 25+ have a high school diploma or higher, and 59.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 80503?
The mean commute time for workers in ZIP code 80503 is 23.1 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 80503?
In ZIP code 80503, approximately 66.1% of occupied housing units are owner-occupied and 33.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 80503?
The poverty rate in ZIP code 80503 is 5.8% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 80503's numbers, next.
- See how ZIP 80503 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Longmont, CO ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.