Twin Lakes, Iowa Demographics & Population 2026

A note before these figures: with a population of 579, Twin Lakes's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Twin Lakes is a small community located in Iowa, within Calhoun County. The total population is 579. It ranks as the 436th most populous out of 1,017 Census-designated places in Iowa.

Age Demographics

The median age in Twin Lakes is 58.4 years. This is 51% higher than the state median of 38.6 years. 11.9% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Twin Lakes is $109,712. This is 46% higher than the state median of $75,059. It is also 36% higher than the national median of $80,734. The poverty rate stands at 4.0%. This is 64% lower than the state poverty rate of 11.1%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 10.8%. This is 203% higher than the state rate of 3.6%. The median home value is $561,500. Housing costs are 170% higher than the state median of $208,000. The home-value-to-income ratio is 5.1x. 89.4% of occupied housing units are owner-occupied. This homeownership rate is 25% higher than the state average of 71.7%.

Race & Ethnicity

Twin Lakes has a predominantly White (non-Hispanic) population, comprising 97.8% of all residents.

Education

53.8% of residents aged 25 and older hold a bachelor's degree or higher. This places Twin Lakes in the top 10% of all cities in the state for educational attainment. This is 71% higher than the state rate of 31.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample. Notably, 21.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Twin Lakes, Iowa is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Iowa state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,017 Census-designated places in Iowa. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.