South Vienna, Ohio Demographics & Population 2026

A note before these figures: with a population of 541, South Vienna'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

South Vienna is a small community located in Ohio, within Clark County. The total population is 541. It ranks as the 864th most populous out of 1,264 Census-designated places in Ohio.

Age Demographics

The median age in South Vienna is 40.5 years. This is 2% higher than the state median of 39.7 years.

Economy, Income & Housing

The median household income in South Vienna is $69,118. This is 3% lower than the state median of $71,389. It is also 14% lower than the national median of $80,734. The poverty rate stands at 1.7%. This is 87% lower than the state poverty rate of 13.3%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.9%. This is 3% higher than the state rate of 4.8%. The median home value is $162,100. Housing costs are 25% lower than the state median of $214,800. With a home-value-to-income ratio of just 2.3x, South Vienna is one of the most affordable housing markets in the area. 67.9% of occupied housing units are owner-occupied. This homeownership rate is 1% higher than the state average of 67.2%.

Race & Ethnicity

South Vienna has a predominantly White (non-Hispanic) population, comprising 93.9% of all residents. Black or African American residents account for 5.4%. The Black or African American population (5.4%) is well below the state average of 12.0%.

Education

13.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 59% lower than the state rate of 31.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 87.0%.

Data Sources & Methodology

All demographic data for South Vienna, Ohio 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 Ohio state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,264 Census-designated places in Ohio. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.