Boulder
Source:
Colorado
Boulder is a major-metro county in Colorado with 19 ZIP codes, 305,480 people, and top-decile household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
National county placement
According to ACS 5-Year Estimates, Boulder, CO sits among US counties with a top-decile household income, on a major-metro county population base, across a multi-ZIP patchwork.
- Top 3%
- household income vs 3,210 US counties
- 305,480
- combined ZIP population
- 19
- USPS ZIP codes covered
- $114,525
- avg ZIP median income
Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.
Boulder lands in the national county income distribution as top-decile household income on major-metro county footing (FIPS 08013, 19 ZIPs, combined population 305,480). Sort the ZIP table by population before treating the county mean as uniform.
High-income counties with wide ZIP mosaics hide sharp internal gradients. The densest ZIP here is 80504 (Longmont) with 46,876 residents - open it beside a thin rural code from the table before treating the county mean as uniform. HUD Fair Market Rents and FBI county tables attach to FIPS 08013, so scorecards stay county-keyed while household income stays ZIP-keyed.
Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.
19
Total ZIPs
305,480
Total Population
ZIP Codes in Boulder
Side-by-side: Compare 80504 vs 80501 →
| ZIP Code | City | Population | Density |
|---|---|---|---|
| 80504 | Longmont | 46,876 | 183 |
| 80501 | Longmont | 39,521 | 1,233 |
| 80503 | Longmont | 31,064 | 132 |
| 80027 | Louisville | 31,034 | 616 |
| 80302 | Boulder | 26,941 | 126 |
| 80026 | Lafayette | 26,378 | 458 |
| 80304 | Boulder | 25,623 | 1,085 |
| 80301 | Boulder | 22,555 | 300 |
| 80303 | Boulder | 22,361 | 392 |
| 80305 | Boulder | 16,874 | 905 |
| 80310 | Boulder | 6,578 | 5,854 |
| 80540 | Lyons | 4,461 | 11 |
| 80466 | Nederland | 3,338 | 14 |
| 80481 | Ward | 572 | 3 |
| 80455 | Jamestown | 497 | 6 |
| 80510 | Allenspark | 420 | 3 |
| 80025 | Eldorado Springs | 253 | 8 |
| 80544 | Niwot | 111 | 873 |
| 80471 | Pinecliffe | 23 | 12 |
Frequently Asked Questions
What is the population of Boulder?
Boulder has a total population of 305,480 across 19 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Boulder?
Boulder includes 19 ZIP codes: 80504, 80501, 80503, 80027, 80302, 80026, 80304, 80301, 80303, 80305, and more.