Summit, South Carolina Demographics & Population 2026

A note before these figures: with a population of 533, Summit'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

Summit is a small community located in South Carolina, within Lexington County. The total population is 533. It ranks as the 331st most populous out of 474 Census-designated places in South Carolina.

Age Demographics

The median age in Summit is 55.4 years. This is 38% higher than the state median of 40.2 years. Only 9.8% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Summit is $67,083. This is 3% lower than the state median of $69,324. It is also 17% lower than the national median of $80,734. The poverty rate stands at 4.9%. This is 65% lower than the state poverty rate of 14.1%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 0.9%. This is 81% lower than the state rate of 4.9%. The median home value is $202,000. Housing costs are 22% lower than the state median of $259,000. The home-value-to-income ratio is 3.0x. 88.2% of occupied housing units are owner-occupied. This homeownership rate is 23% higher than the state average of 71.9%.

Race & Ethnicity

The largest racial or ethnic group in Summit is White (non-Hispanic), making up 83.9% of the population. Black or African American residents account for 12.2%. The Black or African American population (12.2%) is well below the state average of 24.6%. The Hispanic or Latino population (1.5%) is well below the state average of 7.4%.

Education

12.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 61% lower than the state rate of 32.1%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 84.1%.

Data Sources & Methodology

All demographic data for Summit, South Carolina 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 South Carolina state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 474 Census-designated places in South Carolina. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.