A Boulder street with snowy mountains rising beyond it.

Boulder, Colorado

Homes for Sale in Boulder, CO

Every Boulder listing on REColorado, plus Steve’s notes on the city beneath the Flatirons.

Boulder at a glance

Beneath the Flatirons, 25 miles up US-36

In 1967 Boulder voters approved the country’s first sales tax dedicated to buying open space.

The city now holds more than 46,000 acres of open space with about 155 miles of trails, and about 106,000 people live here, 25 miles up US-36 from Denver.

Population

105,689Census, 2025 estimate

County

Boulderthe county seat

Schools

Boulder Valleyabout 98 percent of the city

Open space

46,000+acres, with about 155 miles of trails

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Covered front porch of a mid-century home.

Single-family homes

Detached homes across the city.

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Staged living room in a condo with a fireplace.

Condos and townhomes

Attached homes across the city.

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The Flatirons above the Chautauqua Park meadow in Boulder.

Mountain views

Listings that mention the view.

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Two-story brick home with dormers and a three-car garage.

New this month

Listings from the last 30 days.

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Newest listings in Boulder

See every Boulder listing

$545,000

3701 Arapahoe Avenue 216 Boulder, Colorado

1 Beds 1 Baths 916 SqFt

Coming Soon Listing courtesy of RE/MAX Elevate

$649,000

1325 Bear Mountain Drive #D Boulder, Colorado

4 Beds 3 Baths 1,558 SqFt 0.03 Acres

Active Listing courtesy of LIV Sotheby's Intl Realty D

$635,000

3874 Broadway Street 9 Boulder, Colorado

3 Beds 2 Baths 1,488 SqFt

Active Listing courtesy of RE/MAX of Boulder, Inc

$2,499,000

3735 Wild Plum Court Boulder, Colorado

6 Beds 5 Baths 4,684 SqFt 0.7 Acres

Active Listing courtesy of Compass - Boulder

$1,295,000

1010 Hartford Drive Boulder, Colorado

5 Beds 3 Baths 2,120 SqFt 0.16 Acres

Active Listing courtesy of Resident Realty

$424,000

500 Mohawk Drive #205 Boulder, Colorado

2 Beds 1 Baths 966 SqFt 2.01 Acres

Active Listing courtesy of Kearney Realty

$675,000

380 27th Street Boulder, Colorado

2 Beds 1 Baths 1,012 SqFt 0.14 Acres

Coming Soon Listing courtesy of 8z Real Estate

$800,000

525 S 46th Street Boulder, Colorado

4 Beds 3 Baths 2,312 SqFt 0.17 Acres

Coming Soon Listing courtesy of 8z Real Estate

Pearl Street in Boulder at sunset, with the foothills beyond.

A wooden fence across a green meadow below the mountains in Boulder.

Aerial view of a mid-century home with mountains in the distance.

Mid-century home with a wide front lawn.

Steve Calley on a phone call by a window, in a light blue polo shirt.

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Pearl Street and Chautauqua

The Pearl Street Mall, dedicated in 1977, is the heart of downtown. Chautauqua Park is the gateway to the Flatirons, and the University of Colorado Boulder opened in 1877.

The open space

More than 46,000 acres of city open space and about 155 miles of trails surround Boulder. The 5.5-mile Boulder Creek Path runs through town, and Boulder Reservoir sits to the northeast.

The homes

Homes of every era, from older neighborhoods near downtown to later ones farther out, with the greenbelt all around. Ask Steve how different parts of the city compare.

What to check before you offer

Older homesAdd a sewer line scope to the inspection and ask about the age of the roof and systems.
The school, by addressBoulder Valley covers about 98 percent of the city; a small northern edge is in St. Vrain. Confirm the address.
Metro district and HOA costsNewer Colorado neighborhoods often sit in a metropolitan district that adds to the property tax bill, and many carry HOA dues. Get both figures in writing before your contract deadlines.

Talk to Steve about Boulder

Weighing Boulder against Superior or Lafayette? All three are in Boulder Valley schools, and Steve can walk you through how they differ.

Talk to Steve about Boulder

Day to day

Schools, parks and getting around

Schools

Boulder Valley School District for about 98 percent of the city
University of Colorado Boulder, opened 1877

Open space

Downtown

Pearl Street Mall
Dedicated August 6, 1977

Getting around

US-36 to Denver, about 25 miles
The Flatiron Flyer to Union Station
State Highway 119 (the Diagonal) to Longmont
State Highway 93 to Golden

School information is factual and by district. Always confirm a specific address in the district’s school finder.

Questions

Boulder FAQ

How far is Boulder from Denver?

About 25 miles up US-36, with Flatiron Flyer bus rapid transit to Union Station.

Which school district serves Boulder?

Boulder Valley School District covers about 98 percent of the city; a small, mostly undeveloped northern edge is in St. Vrain. Confirm a specific address with the district.

How much open space does Boulder have?

More than 46,000 acres, with about 155 miles of trails. In 1967 Boulder voters approved the country’s first sales tax dedicated to buying open space.

When did the Pearl Street Mall open?

It was dedicated on August 6, 1977.

Nearby