Boulder is a city in Boulder County, Colorado, home to about 106,433 people across 26 square miles. Its ZIP codes are 80301, 80302, 80303, 80304, 80305 and 80310, and parts of 80503 are in Boulder too.
Homes sold for a median of $578 per square foot across 5 ZIP codes in the three months ending August 2026, and 1 of 5 were seller’s markets.
Mostly Boulder; also Gunbarrel and Valmont
Mostly Boulder; also Lazy Acres and Altona
Mostly Boulder; also Paragon Estates and Eldorado Springs
Mostly Boulder; also Pine Brook Hill
Mostly Boulder
All in Boulder
Mostly Longmont; part is in Boulder
Each card is that ZIP code’s whole market, including any part outside Boulder. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Boulder’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Denver International Airport (DEN)33 miles away |
|---|---|
| Closer regional airport | Rocky Mountain Metropolitan Airport (BJC)11 miles away |
| Nearest city of 250,000+ | Denver, CO27 miles away |
| Nearest city of 1 million+ | Phoenix, AZ584 miles away |
Straight-line distances from the center of Boulder; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Boulder had 108,250 residents in the 2020 census, up 14% since 2000.
It’s the 12th largest of 472 towns in Colorado by population.
Boulder County grew from 21,544 residents in 1900 to 330,758 in 2020.
Boulder County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 21°F. About 21.3 inches of rain and melted snow fall in a typical year, with about 93 inches of snow.
Source: NOAA 1991–2020 climate normals, Boulder, CO weather station (2 miles away).
159,619 jobs at 12,990 businesses in Boulder County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
3,893 doctors and other health care providers list an office in Boulder’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 202 |
|---|---|
| Specialist doctors | 344 |
| Dentists | 181 |
| Nurse practitioners and physician assistants | 333 |
| Mental health providers | 2,247 |
| Physical and occupational therapists | 411 |
| Optometrists | 42 |
| Chiropractors | 133 |
| Pharmacies | 33 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (70 nearby)
Grocery stores (19 nearby)
Pharmacies (10 nearby)
Libraries (7 nearby)
Museums (11 nearby)
Theaters and performance venues (15 nearby)
Counts are within about 3.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1858.
Colleges and universities
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Boulder Valley School District No. Re2, Education Reenvisioned Boces. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Bear Creek Elementary SchoolBoulder | Pre-K–5 | 318 | Public | 3.1 mi |
| Columbine Elementary SchoolBoulder | Pre-K–5 | 369 | Public | 1.1 mi |
| Community Montessori SchoolBoulder | Pre-K–6 | 277 | Public | 2.9 mi |
| Creekside Elementary School at Martin ParkBoulder | Pre-K–5 | 359 | Public | 2.3 mi |
| Douglass Elementary SchoolBoulder | Pre-K–5 | 313 | Public | 4.2 mi |
| Eisenhower Elementary SchoolBoulder | Pre-K–5 | 308 | Public | 1.4 mi |
| Heatherwood Elementary SchoolBoulder | Pre-K–5 | 252 | Public | 4.8 mi |
| Mapleton Early Childhood CenterBoulder | Pre-K | 68 | Public | 1.9 mi |
| Mesa Elementary SchoolBoulder | Pre-K–5 | 250 | Public | 3.6 mi |
| University Hill Elementary SchoolBoulder | Pre-K–5 | 405 | Public | 1.7 mi |
| Boulder Community School/Integrated StudiesBoulder | K–5 | 255 | Public | 1.4 mi |
| Boulder UniversalBoulder | K–12 | 231 | Public | 2.9 mi |
| Crest View Elementary SchoolBoulder | K–5 | 390 | Public | 2.3 mi |
| Flatirons Elementary SchoolBoulder | K–5 | 163 | Public | 2.1 mi |
| Foothill Elementary SchoolBoulder | K–5 | 419 | Public | 2.0 mi |
| Gold Hill Elementary SchoolGold Hill | K–5 | 10 | Public | 9.0 mi |
| High Peaks Elementary SchoolBoulder | K–5 | 257 | Public | 1.4 mi |
| Horizons K-8 SchoolBoulder | K–8 | 358 | Charter, Alternative Education | 2.2 mi |
| Whittier Elementary SchoolBoulder | K–5 | 269 | Public | 1.0 mi |
| Casey Middle SchoolBoulder | 6–8 | 363 | Public | 1.5 mi |
| Centennial Middle SchoolBoulder | 6–8 | 598 | Public | 1.7 mi |
| Manhattan Middle School of the Arts and AcademicsBoulder | 6–8 | 482 | Public | 2.3 mi |
| Nevin Platt Middle SchoolBoulder | 6–8 | 483 | Public | 2.6 mi |
| Southern Hills Middle SchoolBoulder | 6–8 | 502 | Public | 3.4 mi |
| Summit Middle Charter SchoolBoulder | 6–8 | 366 | Charter | 2.8 mi |
| Williamsburg Academy of ColoradoBoulder | 6–12 | 622 | Public | 1.6 mi |
| Arapahoe Ridge High SchoolBoulder | 9–12 | 184 | Alternative Education | 2.9 mi |
| Boulder High SchoolBoulder | 9–12 | 1,939 | Public | 1.4 mi |
| Boulder Prep Charter High SchoolBoulder | 9–12 | 114 | Charter, Alternative Education | 3.9 mi |
| Fairview High SchoolBoulder | 9–12 | 1,863 | Public | 3.5 mi |
And 1 more.
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Bixby SchoolBoulder | Pre-K–5 | 93 | Nonsectarian | 2.8 mi |
| Boulder Country Day SchoolBoulder | Pre-K–8 | 281 | Nonsectarian | 3.7 mi |
| Boulder Montessori SchoolBoulder | Pre-K–K | 3 | Nonsectarian | 4.0 mi |
| Friends SchoolBoulder | Pre-K–8 | 134 | Nonsectarian | 1.7 mi |
| Jarrow Montessori SchoolBoulder | Pre-K–6 | 70 | Nonsectarian | 2.3 mi |
| Jay & Rose Phillips Early Childhood CenterBoulder | Pre-K–K | 9 | Jewish | 2.2 mi |
| Mountain Shadows Montessori SchoolBoulder | Pre-K–4 | 44 | Nonsectarian | 3.0 mi |
| Sacred Heart of Jesus SchoolBoulder | Pre-K–8 | 169 | Roman Catholic | 1.5 mi |
| Shining Mountain Waldorf SchoolBoulder | Pre-K–12 | 170 | Nonsectarian | 2.8 mi |
| Shining Mtn Waldorf High SchoolBoulder | Pre-K–12 | 188 | Nonsectarian | 2.8 mi |
| Ziji Early ElementaryBoulder | K–2 | 16 | Nonsectarian | 3.1 mi |
| Temple Grandin SchoolBoulder | 6–12 | 22 | Nonsectarian | 2.0 mi |
| Watershed SchoolBoulder | 6–12 | 114 | Nonsectarian | 1.3 mi |
| Tara Performing Arts High SchoolBoulder | 9–12 | 39 | Nonsectarian | 2.2 mi |
| Mapleton Montessori SchoolBoulder | Ungraded | 48 | Nonsectarian | 0.6 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Longmont, Gunbarrel, Niwot, Lazy Acres, Paragon Estates, Altona, Pine Brook Hill, Sugarloaf, Tall Timber, Sunshine, Crisman, Seven Hills, Mountain Meadows, Gold Hill, Eldorado Springs and Valmont.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.