St. Andrews, SC population, income and ZIP codes

St. Andrews CDP is a mid-size town in South Carolina, with 20,953 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #30 of 475 ranked by population — larger than 93% of them. The median age here is 31.7 years against 39.1 nationally, a distinctly younger profile, typical of places with students, military posts or a fast-growing family population. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in St. Andrews CDP earn a median of $45,321 a year, 42.3% below the national figure of $78,538 and 15% below the $53,071 median for the 263 South Carolina cities we cover. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 23.5% of residents here, well above the 12.4% national rate, which is the single clearest signal in this dataset that median income here is carried by a narrow band of households.

The typical owner-occupied home in St. Andrews CDP is valued at $146,700, 51.6% below the national figure and 17% below the $177,100 peer median, while median gross rent runs $1,060 a month, 24.6% below the national figure, or roughly $12,720 across a full year. A household on the local median income would put about 28.1% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 3.2×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 29.6% of occupied homes are owner-occupied versus 65% nationally, a renter-majority market, so rent figures matter more here than the home-value line. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

All values below were released by the Census for this exact geography, with no gap-filling on our side. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.