Boulder County, CO ZIP Codes
21 ZIP codes cover all or part of Boulder County, Colorado. The Census Bureau counts 328,961 residents in the county, with a median household income of $103,994 and a median home value of $756,300. Median household income ranges from $61,698 in 80302 to $168,725 in 80516. Its largest communities include Boulder, Longmont, Erie, Lafayette and Louisville.
Boulder County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 328,961 |
| Households | 137,008 |
| Median household income | $103,994 |
| Median home value | $756,300 |
| Median age | 37.7 |
| Median rent | $1,966 |
All 21 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 442,486 |
| Households (sum of ZIP codes) | 179,309 |
| Median household income, range across ZIP codes | $61,698 (80302) to $168,725 (80516) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $112,565 |
| Homeowners | 65.1% |
| Households with kids under 18 | 26.4% |
| Moved in the past year | 19.2% |
| Carrier routes in EDDM2GO's route library | 328 routes, 189,100 homes (17 of 21 ZIP codes) |
Top facts
- Highest median household income in Boulder County: 80516 ($168,725)
- Most residents: 80504 (63,451 people)
- Highest homeownership: 80540 (89.0% own their home)
- Most households with kids: 80516 (43.3% of households)
- Most new movers: 80310 (70.2% moved in last year)
- Youngest median age: 80310 (19.3 years)
- Highest median home value: 80304 ($1,210,200)
Every ZIP code in Boulder County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 80504 | Longmont | 63,451 | 24,077 | $113,643 | $591,700 | 79.1% | 30.8% | 11.5% | 39 | 26,804 | 41% of its land |
| 80020 | Broomfield | 54,201 | 21,326 | $117,243 | $601,800 | 66.7% | 27.7% | 15.0% | 36 | 23,913 | 25% of its land |
| 80501 | Longmont | 44,147 | 18,945 | $80,911 | $488,800 | 58.5% | 25.0% | 18.3% | 37 | 21,940 | 100% of its land |
| 80516 | Erie | 39,048 | 13,616 | $168,725 | $726,700 | 88.0% | 43.3% | 13.7% | 19 | 15,406 | 14% of its land |
| 80503 | Longmont | 35,846 | 15,153 | $113,620 | $755,500 | 66.1% | 25.5% | 18.1% | 26 | 15,943 | 98% of its land |
| 80027 | Louisville | 34,127 | 13,180 | $154,232 | $890,200 | 67.5% | 36.3% | 14.9% | 25 | 15,790 | 100% of its land |
| 80026 | Lafayette | 32,701 | 13,524 | $120,187 | $705,600 | 65.9% | 30.3% | 13.7% | 23 | 15,973 | 100% of its land |
| 80302 | Boulder | 29,569 | 12,425 | $61,698 | $1,190,800 | 38.9% | 11.6% | 42.7% | 29 | 13,738 | 100% of its land |
| 80304 | Boulder | 25,383 | 11,358 | $126,558 | $1,210,200 | 70.0% | 25.3% | 15.2% | 24 | 12,710 | 100% of its land |
| 80301 | Boulder | 25,007 | 12,371 | $95,207 | $793,200 | 54.9% | 16.8% | 21.2% | 25 | 15,961 | 100% of its land |
| 80303 | Boulder | 24,996 | 11,783 | $78,555 | $961,900 | 43.9% | 13.2% | 32.1% | 20 | 13,291 | 100% of its land |
| 80305 | Boulder | 16,291 | 6,976 | $126,107 | $1,032,900 | 60.2% | 24.0% | 21.1% | 16 | 7,488 | 100% of its land |
| 80310 | Boulder | 7,692 | 2 | — | — | 0.0% | 0.0% | 70.2% | — | — | 100% of its land |
| 80540 | Lyons | 4,642 | 2,025 | $139,521 | $795,500 | 89.0% | 27.0% | 6.2% | 4 | 1,416 | 65% of its land |
| 80466 | Nederland | 3,599 | 1,670 | $100,962 | $731,700 | 65.7% | 21.6% | 22.7% | 2 | 715 | 100% of its land |
| 80510 | Allenspark | 663 | 330 | $101,250 | $771,100 | 77.9% | 17.9% | 40.7% | 1 | 163 | 100% of its land |
| 80455 | Jamestown | 501 | 212 | $169,286 | $622,400 | 91.0% | 25.0% | 12.0% | 1 | 107 | 100% of its land |
| 80481 | Ward | 484 | 249 | $116,563 | $710,700 | 98.4% | 19.7% | 8.8% | 1 | 244 | 100% of its land |
| 80025 | Eldorado Springs | 138 | 87 | $134,102 | — | 100.0% | 0.0% | 27.5% | — | — | 100% of its land |
| 80471 | Boulder County | 0 | 0 | — | — | — | — | — | — | — | 100% of its land |
| 80544 | Niwot | 0 | 0 | — | — | — | — | — | — | — | 100% of its land |
A ZIP code is listed for Boulder County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Boulder — 106,433 residents · 6 ZIP codes
- Longmont — 99,406 residents · 3 ZIP codes
- Erie — 33,808 residents · 1 ZIP code
- Lafayette — 30,602 residents · 1 ZIP code
- Louisville — 20,786 residents · 1 ZIP code
- Superior — 13,305 residents · 1 ZIP code
- Gunbarrel — 10,051 residents · 2 ZIP codes
- Niwot — 3,447 residents · 2 ZIP codes
- Lyons — 1,838 residents · 1 ZIP code
- Nederland — 1,655 residents · 1 ZIP code
- Allenspark — 825 residents · 2 ZIP codes
- Lazy Acres — 778 residents · 1 ZIP code
- Paragon Estates — 667 residents · 1 ZIP code
- Altona — 587 residents · 1 ZIP code
- Pine Brook Hill — 543 residents · 1 ZIP code
- Sugarloaf — 474 residents · 1 ZIP code
- Eldora — 465 residents · 1 ZIP code
- St. Ann Highlands — 453 residents · 1 ZIP code
- Tall Timber — 382 residents · 1 ZIP code
- Sunshine — 330 residents · 1 ZIP code
- Jamestown — 324 residents · 1 ZIP code
- Eldorado Springs — 320 residents · 2 ZIP codes
- Crisman — 268 residents · 1 ZIP code
- Bark Ranch — 199 residents · 1 ZIP code
- Seven Hills — 183 residents · 1 ZIP code
- Mountain Meadows — 180 residents · 1 ZIP code
- Gold Hill — 178 residents · 2 ZIP codes
- Ward — 103 residents · 2 ZIP codes
- Glendale (Boulder County) — 69 residents · 1 ZIP code
- Bonanza Mountain Estates — 56 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Boulder County — 14 ZIP codes ranked
- ZIP codes with the highest home values in Boulder County — 14 ZIP codes ranked
- ZIP codes with the highest homeownership in Boulder County — 15 ZIP codes ranked
- ZIP codes with the most families with kids in Boulder County — 15 ZIP codes ranked
- ZIP codes with the most new movers in Boulder County — 15 ZIP codes ranked
- Youngest ZIP codes in Boulder County — 15 ZIP codes ranked
- Oldest ZIP codes in Boulder County — 15 ZIP codes ranked
- Fastest-growing ZIP codes in Boulder County — 15 ZIP codes ranked
Price a mailing to Boulder County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Boulder County, CO?
- 80504, 80020, 80501, 80516, 80503, 80027, 80026, 80302, 80304, 80301, 80303, 80305, 80310, 80540, 80466, 80510, 80455, 80481, 80025, 80471 and 80544. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Boulder County?
- 328,961 residents in 137,008 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Boulder County?
- $103,994 for the county as a whole. Its ZIP codes range from $61,698 (80302) to $168,725 (80516).
- Which Boulder County ZIP code has the highest median household income?
- 80516, at $168,725, among ZIP codes with at least 1,000 residents. See the full ranking of Boulder County ZIP codes by income.
- How many carrier routes and mailboxes are in Boulder County?
- For the 17 of 21 ZIP codes in EDDM2GO's stored route library: 328 carrier routes reaching 189,100 residential and 12,334 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.