With 1,572 people, Middletown is a city in California. The median age is 29.5, younger than the US median of 38.9. 14% of adults hold a bachelor's degree, below the 36% national rate. People stay put here: 67% were in the same home a year ago. Since 2000 the city has risen by half, up 552 people. 31% of locals were born outside the United States.
At a glance
Younger
median age 29.5
US median: 38.9
Less educated
14% hold a bachelor's degree
US average: 36%
Less affordable
home values up 79%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Middletown
What changed most since 2000
Median age38.2 → 29.5(−8.7 years)US over the same years: +3.7 years
Hispanic share22.8% → 49.0%(+26.2 pts)US over the same years: +6.3 pts
Poverty rate20.9% → 8.1%(−12.9 pts)US over the same years: 0.0 pts
Middletown's population equals 2.3% of Lake County's. Its number of veterans equals 0.1% of the county's. Its number of people who work from home equals 0.1% 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)0%(0)
US avg: 26.4%
Gulf War (1990s)0%(0)
US avg: 24.3%
Vietnam era0%(0)
US avg: 33.1%
Korean War0%(0)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 5 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
Middletown, decade by decade
Middletown 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
2000
1,020
$64,264
$225,157
14.5%
55.3
2010
1,323
$66,066
$500,335
20.2%
59.2
2020
1,114
$175,377
$2,424,079+
18.3%
66.2
2024
1,572
–
$403,900
14.4%
64.5
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.
