Delta County, Colorado Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 18th-largest in Colorado
The population of Delta County, Colorado is 31,353 as of the 2023 American Community Survey, making it the 18th-largest county in Colorado. The median household income is $58,330, the median home value is $318,000, and the median age is 48.4.
The population of Delta County has grown 4.4% since 2010 (30,858 → 32,215), a +0.31% annualized rate.
31,353
Population
+0.31%
Annual growth
27
People / sq mi
$58,330
Median Income
$318,000
Median Home Value
Delta County covers 1,142 sq mi of land at 27.5 people per square mile.
About Delta County, CO
Delta County skews on age — the median resident is 48.4, older than the national median. With 31,353 residents, Delta County is a county in Colorado. It ranks #18 among counties in Colorado by population.
The typical household here earns about $58,330, below the US median of $78,538. The poverty rate is 10.8%, below the national 12.4%. The median home value is $318,000, with typical rent around $1,080.
25.7% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. A solid 14.5% of workers are based at home, close to the national 14.0%, and the average commute runs about 26 minutes each way.
The age structure shapes everything downstream in Delta County — from housing demand to the mix of working-age earners reflected in the income figures above.
Delta County Population History (2010-2024)
The county of Delta County had a population of 30,858 in 2010 and 32,215 in 2024, a 4.4% growth over 14 years. The peak was 32,215 in 2024. Average annual growth rate: 0.31%.
32,215
Population (2024)
30,858
Population (2010)
32,215
Peak (2024)
0.31%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 30,858 |
| 2011 | 30,398 |
| 2012 | 30,473 |
| 2013 | 30,349 |
| 2014 | 29,973 |
| 2015 | 29,925 |
| 2016 | 30,352 |
| 2017 | 30,516 |
| 2018 | 30,835 |
| 2019 | 31,021 |
| 2020 | 31,056 |
| 2021 | 31,387 |
| 2022 | 31,573 |
| 2023 | 31,760 |
| 2024 | 32,215 |
Race & Ethnicity
| White | 86.7% |
| Black or African American | 0.8% |
| Asian | 0.2% |
| Hispanic or Latino (any race) | 2.3% |
| Two or More Races | 0.0% |
Age & Sex
48.4
Median Age
50.3%
Female
49.7%
Male
27.7%
Age 65+
Age Distribution
Children (under 15): 15.6% · Seniors (65+): 27.7%
Income & Poverty
| Median household income | $58,330$-34,140 vs state |
| Mean household income | $82,168 |
| Per-capita income | $35,746 |
| Poverty rate | 10.8%+4.9% vs state |
| Unemployment rate | 1.5% |
| Employment-to-population | 46.9% |
Top Industries by Employment
The largest employment sector in Delta County is professional & business services, accounting for 20.9% of workers.
How residents commute
0.1%
Drive alone
3.8%
Carpool
72.0%
Public transit
14.5%
Work from home
26.3 min
Avg commute
Housing
$318,000$-184,200 vs state
Median home value
$1,080
Median rent
76.4%
Homeownership rate
14,931
Total housing units
84.7%
Occupied
15.3%
Vacant
23.6%
Renter-occupied
Social & access
89.0%
With health insurance
89.9%
With broadband internet
44.5%
Foreign-born
9.9%
Veterans (18+)
19.2%
With a disability
90.9%
Speak language other than English at home
Education
91.0%
High School+
25.7%
Bachelor's+
Largest cities in Colorado
Other counties in Colorado
Part of Colorado
Metro areas in Colorado
County rankings
Frequently Asked Questions
Delta County, Colorado has a population of 31,353 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 18th-largest county in Colorado. Population density is 27 people per square mile.
The population of Delta County has grown 4.4% since 2010 (30,858 → 32,215), a +0.31% annualized rate.
The median household income in Delta County, Colorado is $58,330, with mean (average) household income of $82,168 and per-capita income of $35,746. 10.8% of residents live below the federal poverty level.
In Delta County, the largest racial and ethnic groups are White (86.7%), Hispanic or Latino (2.3%), Black or African American (0.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Delta County, Colorado is 48.4 years. Residents are 50.3% female and 49.7% male.
The median home value in Delta County is $318,000 and median monthly rent is $1,080. 76.4% of occupied housing units are owner-occupied. The county has 14,931 total housing units, 15.3% of which are vacant.
The largest employment sector in Delta County, Colorado is professional, scientific, and management services, employing 20.9% of workers. The unemployment rate is 1.5%.
Denver is among the largest cities associated with Delta County, Colorado, with a population of 713,734.
Delta County, CO Climate
Delta County, CO has an average annual temperature of 9.5°C (49°F) and receives about 320 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
9.5°C
Avg Temp
320
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -3° / 26° | 21 mm |
| February | 0° / 32° | 19 mm |
| March | 4° / 40° | 29 mm |
| April | 8° / 47° | 27 mm |
| May | 14° / 56° | 28 mm |
| June | 19° / 66° | 19 mm |
| July | 22° / 72° | 29 mm |
| August | 22° / 71° | 32 mm |
| September | 17° / 62° | 32 mm |
| October | 10° / 51° | 34 mm |
| November | 3° / 37° | 27 mm |
| December | -2° / 28° | 23 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Delta County, CO
The most comfortable months to visit Delta County, CO are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near -10°C low). October is usually the wettest month.
Where to stay near Delta County
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Population, race, income, age, and trends across Colorado
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.