Each edition grades its towns against each other only.
A town of 143.
William Seabrook House and Rockville Historic District is on the National Register of Historic Places. Rockville has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
In a town this size, neighbors are the best guide. Ask them anything.
Census counts: 137 in 2000, 141 in 2020. The archive holds 5 old photos and papers going back to 1860 and 4 maps from 1919 on.
1 place on the National Register of Historic Places.
Explore the history →Museums, parks, gardens and other places to visit around Rockville. Close and well known come first.
Big draw21 mi MuseumUSS Yorktown
Big draw22 mi MuseumH. L. Hunley
21 mi MuseumUSS Laffey
10 mi Park & preserveAngel Oak
20 mi LandmarkFort Wagner
19 mi DamThe BatteryUSS Yorktown: David Ratledge, CC BY 4.0 · H. L. Hunley: Sepia wash drawing by R.G. Skerrett, 1902, after a painting then held by the Con, Public domain · USS Laffey: U.S. Navy, Public domain · Angel Oak: Galen Parks Smith, CC BY-SA 3.0 · Fort Wagner: Unknown authorUnknown author, Public domain · The Battery: Eagledj, CC BY-SA 4.0
Who provides power, water and the rest in Rockville, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 12, 2025.
Ordered by what stands out in Rockville.
Expected losses in Rockville break down as 58% from hurricanes and 16% from earthquakes. FEMA expects more storm and flood damage locally than in 95% of U.S. communities.
FEMA National Risk Index · OpenFEMA
The median household income in Rockville is $83,000. 2.5% of residents live below the poverty line locally, against 17% in South Carolina’s towns and 9.6% across U.S. towns. Half commute less than 19 miles. The top destinations are Charleston (31%), North Charleston (16%) and Mount Pleasant (8%).
| Rockville | South Carolina towns | U.S. towns | |
|---|---|---|---|
| Below the poverty line | 2.5% | 17% | 9.6% |
| Median household income | $83,000 | $57,000 | $80,000 |
| Average trip to work | 26 minutes | 24 minutes | 25 minutes |
Census LEHD 2023 · ACS
NOAA U.S. Climate Normals, 1991–2020
Among adults in Rockville, 26% feel lonely. One in ten adults smoke cigarettes locally, where South Carolina’s towns sit at 15% and U.S. towns at 14%. This South Carolina town beats the South Carolina average on 20 of 32 CDC measures and trails it on 4.
| Rockville | South Carolina towns | U.S. towns | |
|---|---|---|---|
| Frequent mental distress (CDC PLACES) | 11% | 18% | 17% |
| Sleep under 7 hours (CDC PLACES) | 27% | 38% | 36% |
| Feel lonely (CDC PLACES) | 26% | 33% | 33% |
| Obesity (CDC PLACES) | 27% | 37% | 35% |
| What stands out | Rockville | SC |
|---|---|---|
| Fewer adults facing a utility shut-off | 3.9% | 8.9% |
| Fewer adults facing housing insecurity | 6% | 13.3% |
| More adults who have had cancer | 14% | 8.6% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
91% of Rockville households are owner-occupiers.
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
None within 15 miles of Rockville; the nearest are
About 1 of every 100 Rockville residents are enrolled in college, against 6 across South Carolina.
Where Rockville’s working residents go each day. Line width shows the share.
Census LEHD 2023
Town in South Carolina, United States
Rockville is a town in Charleston County, South Carolina, United States, that was founded in 1784. As of the 2020 census, Rockville had a population of 141. It is part of the Charleston-North Charleston-Summerville metropolitan area. The town is the site of the Rockville Regatta, an annual sailing event dating to 1890.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
Rockville has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
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