Johnstown is a city of 18,883 people in Colorado. Since 2000 the city has more than tripled, up 15,056 people. Few US cities rank higher on income. Households here earn about 35% more than in Colorado as a whole. 78% of homes are owner-occupied. Median household income runs $128,995, well clear of the $82,259 US median.
At a glance
Wealthier
median household income $128,995, above the US median
US median: $82,259
Younger
median age 34.9
US median: 38.9
Average education
38% hold a bachelor's degree
US average: 36%
Less affordable
home values up 95%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Johnstown
What changed most since 1990
Population1,579 → 18,883(+1,096%)US over the same years: +35%
Median home value (2024 dollars)$128,644 → $540,300(+320%)US over the same years: +67%
Median household income (2024 dollars)$55,202 → $128,995(+134%)US over the same years: +14%
Johnstown's population equals 5.4% of Weld County's. Its number of residents living in poverty equals 2.1% of the county's. Its number of foreign-born residents equals 3.0% of the county's.
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)44%(538)
US avg: 26.4%
Gulf War (1990s)25.8%(316)
US avg: 24.3%
Vietnam era22.7%(278)
US avg: 33.1%
Korean War1.5%(18)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 1,223 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Johnstown, decade by decade
Johnstown population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
1,579
$55,202
$128,644
9.3%
49.0
2000
3,827
$91,819
$277,256
20.5%
48.5
2010
9,887
$101,245
$322,815
25.9%
41.2
2020
17,303
$139,468
$441,303
33.5%
48.8
2024
18,883
$128,995
$540,300
38.5%
52.5
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
