Swansea is a village in St. Clair County, Illinois. It is a part of the St. Louis metropolitan area and Metro East in southern Illinois. It is surrounded by the communities of Fairview Heights, Belleville, O’Fallon, and Shiloh. As of the 2020 census, Swansea had a population of 14,386.

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

How Swansea ranks

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#35Most new homes in IL #99Fastest growing in IL #39Rent easiest to afford in IL All IL rankings →

Town numbers

ZIP codeSign in to add

Area code618

Living in Swansea

Housing in Swansea

$269K▲ 1.5% in a year Typical home value · Zillow

The typical Swansea home is worth about $269,000, up 1.5% in a year, 10% below the Illinois typical home.

A seller's market

Buyer’sBalancedSeller’s

Days on market40

Sale-to-list103.2%

Sold in May20

Zillow Home Value Index · Redfin Data CenterHousing market →

Safety in Swansea

B⁺

Safety Grade B+

Swansea reports less crime per resident than 73% of the U.S. towns and cities we grade.

Violent crime per 1,000

Swansea 0.7

Illinois 2.6

U.S. 3.3

Property crime per 1,000

Swansea 6.8

Illinois 15.6

U.S. 15.5

FBI crime data, 2025 · crimes reported to policeCrime & safety →

Health in Swansea

Compared with Illinois

8better than IL·3worse

of 32 measures CDC estimates. The other 21 are too close to call.

Conditions 3▼ 9 close Habits all close Care 5▲ 2 close Mind all close Everyday needs 3▲ 1 close

BetterToo close to callWorse

What stands out

6.2%Fewer uninsured adultsIL 9.9% · better 12.3%Fewer adults facing food insecurityIL 15.9% · better 9.1%More adults who have had cancerIL 7.6% · worse

Care nearby

Memorial HospitalBelleville · 1.8 mi · ER

Sihf Healthcare - SwanseaSwansea · 1.9 mi · sliding-scale fees

Primary careShortage · county-wide

DentalShortage · county-wide

Mental healthShortage · county-wide

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Swansea · CMS · HRSAHealth in Swansea →

Famous people from SwanseaWriters, athletes, leaders and more who were born in Swansea.Meet them →

Where Swansea is

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Locator map of Swansea — Wikimedia Commons · Map: Rcsprinter123 · CC BY 3.0

Location map

Illinois · ILTown boundary on OpenStreetMap →

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