Boulder, CO Profile: Facts, Map & Data


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Boulder, Colorado - Basic Facts

The City of Boulder is the 10th largest city in Colorado with a population of 108,649 as of July 1, 2017. Boulder ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Colorado. See peer rankings below.

The primary coordinate point for Boulder is located at latitude 40.0274 and longitude -105.2519 in Boulder County. The formal boundaries for the City of Boulder (see map below) encompass a land area of 24.85 sq. miles and a water area of 1.02 sq. miles. Boulder County is in the Mountain time zone (GMT -7). The elevation is 5,328 feet.

The City of Boulder (GNIS ID: 2409883) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Colorado is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Boulder is located within Boulder Division of Boulder County.

Beneath the boundary map are tables with Boulder population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


City of Boulder, CO Boundary Map

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Boulder, CO Data & Demographics (As of July 1, 2017)


Total Population 108,649
Daytime Population: Workers 117,568
Daytime Population: Residents 49,604
Total Daytime Population (TDP) 167,172
Ratio TDP/Total Population1 1.54
Population in Households 99,285
Population in Familes 52,000
Population in Group Qrtrs 9,364
Population Density2 4,373
Diversity Index3 38


Median Household Income $56,640
Average Household Income $92,831
Per Capita Income $40,119


Total Housing Units 46,781 (100%)
Owner Occupied HU 20,062 (42.9%)
Renter Occupied HU 25,284 (54.0%)
Vacant Housing Units 1,436 ( 3.1%)
Median Home Value $539,103
Average Home Value $592,247


Total Households 45,345
Average Household Size 2.19
Family Households 18,068
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 1.5% 1.11%
Households 1.28% 1.16%
Families 1.07% 0.98%
Median Household Income   3.64%
Per Capita Income   2.85%

Boulder, CO - Peer Comparisons by Rank and Percentile

The table below compares Boulder to the other 458 incorporated cities, towns and CDPs in Colorado by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 10 98th
Population Density # 18 96th
Diversity Index # 200 56th
Median Household Income # 212 54th
Per Capita Income # 103 78th

Additional comparisons and rankings can be made with a VERY EASY TO USE Colorado Census Data Comparison Tool.

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