Eldora Flag

Eldora

County:
Boulder County
County Seat:
No
Area (mi²):
4.156
State:
Colorado

Eldora is a CDP located in Boulder County, Colorado. Eldora has a 2026 population of 509. Eldora is currently growing at a rate of 4.73% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median age in Eldora is 33.5 years: 32.6 years for males, and 67.2 years for females. For every 100 females there are 460.2 males.

509
Total Population
122
Density (mi²)
23 4.73%
Growth

Eldora Population

Eldora Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026509234.73%
2025486234.97%

Median Age

Overall: 33.5 years
Female: 67.2 years
Male: 32.6 years

Eldora Adults

There are 465 adults, (70 of whom are seniors) in Eldora.

Sex Ratio

Female: 83 (17.8%)
Male: 382 (82.2%)

Demographics

The racial composition of Eldora includes 98.92% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White46098.92%
Two or more races51.08%
Race
Population ↓
Percentage (of total)
White9420.22%
Race
Population ↓
Percentage (of total)
White36678.71%
Two or more races51.08%

Eldora Marital Status

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)