Rock County, Nebraska Demographics 2026

Population Overview

Rock County is located in Nebraska with a total population of 1,335. It is the 80th most populous county out of 93 in Nebraska. The county encompasses 2 Census-designated places.

Age Demographics

The median age in Rock County is 45.2 years. This is 22% higher than the state median of 37.1 years. 11.6% 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 Rock County is $57,500. This is 23% lower than the state median of $74,985. It is also 27% lower than the national median of $78,538. The poverty rate stands at 10.5%. This is 2% higher than the state poverty rate of 10.3%. The unemployment rate is 1.2%. This is 60% lower than the state rate of 3.0%. The median home value is $124,400. Housing costs are 44% lower than the state median of $223,800. With a home-value-to-income ratio of just 2.2x, Rock County is one of the most affordable housing markets in the area. 75.8% of occupied housing units are owner-occupied. This homeownership rate is 14% higher than the state average of 66.5%.

Race & Ethnicity

Rock County has a predominantly White (non-Hispanic) population, comprising 98.4% of all residents. Hispanic or Latino residents account for 0.4%. The Black or African American population (0.1%) is well below the state average of 4.6%. The Hispanic or Latino population (0.4%) is well below the state average of 12.3%.

Education

29.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 15% lower than the state rate of 34.1%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.3%.

Data Sources & Methodology

All figures for Rock County come from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023), with comparisons drawn against Nebraska and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.