Charlestown Housing Density Compared To All Other RI Towns

Rhode Island is the smallest U.S. state by land area, and the second most densely populated state, exceeded in density of development only by New Jersey. Rhode Island’s 39 cities and towns range in housing density from 36 dwelling units per square mile in rural Foster to 6,826 in urban Central Falls.

Charlestown, at 160 dwelling units per square mile, is the most densely populated rural town in the state and the most densely populated community that lacks a connection to a sewerage treatment plant. In addition, Charlestown does not have public water.

Between 1970 and 2020, Rhode Island’s population grew from 946,725 to 1,097,379 – a 15.9% increase in population. In those same decades, Charlestown’s population grew from 2,863 to 7,997 – a 179% increase.

Charlestown’s year-round population has nearly tripled in a period when the state, as a whole, has had negligible growth. We have grown more than 11 times faster than the state. Charlestown’s census numbers, however, underestimate our population growth by not considering the large number of dwelling units occupied by non-residents or used for short-term tourist rentals; the occupants of these units are not counted in the census.

In the next 25 years, Rhode Island’s population is expected to decrease by over 5%. Charlestown’s population may decrease as well, as year-round homes continue to transition to second homes. But forced by state mandates, the number of dwelling units in Charlestown will continue to grow.

For a town like Charlestown that depends on individual wells and septic systems, what matters is not the number of people the census counts, but how many total dwelling units there are discharging waste into our groundwater.

There are limits to growth. In fact there are large areas both north and south of Route 1 that the Coastal Resource Management Council (CRMC) has already designated as “Developed Beyond Carrying Capacity.” Despite the designation, both CRMC and the RI Department of Environmental Management continue to permit more new dwelling units in these areas.

Charlestown’s zoning, along with over twenty years of commitment to expanding land preservation, was designed to protect our groundwater. The state legislature has overruled our zoning, and the local land conservation effort is now greatly diminished.

Many towns, including Charlestown, are now asking that the state return control over land use, zoning, and planning to the municipalities. That alone won’t guarantee protection of our groundwater, but without local control, our clean drinking water will continue to be threatened.

Municipalities Ranked By Dwelling Units Per Square Mile

MunicipalityCurrent Housing UnitsLand Area in Square MilesDensity - Dwelling Units Per Square MileSewage Treatment Plant
Foster183650.8036No
Exeter 264757.4746No
West Greenwich 257550.2651No
Glocester421354.1878No
Richmond 317340.2979No
Hopkinton361342.9584No
Scituate 426348.1689No
Little Compton241420.52118No
Burrillville 670155.03122Yes - part of town
Charlestown538133.60160No
New Shoreham18189.08200Yes - part of town
North Smithfield535823.80225Yes - part of town
South Kingstown1377156.45244Yes - part of town
Coventry1493159.05253Yes - part of town
Tiverton778129.05268Yes - part of town
North Kingstown1218943.14283Yes - part of town
Smithfield801226.31305Yes
Jamestown 31229.45330Yes - serves half of dwellings
East Greenwich553916.39338Yes - serves two thirds of dwellings
Portsmouth 861022.98375No - ?
Westerly1324529.52449Yes - serves half of dwellings
Lincoln952518.12526Yes
Johnston1250123.43534Yes
Cumberland1501726.45568Yes
Middletown802912.72631Yes - most of town
Narragansett 985713.89710Yes - most of town
Barrington 63808.22776Yes
Warren54956.12898Yes - most of town
Bristol 96299.82981Yes - most of town
Warwick3862535.041102Yes - most of town
Cranston3418228.341206Yes - most of town
East Providence2219613.241676Yes
Newport134667.671756Yes
West Warwick144147.791850Yes
Woonsocket197547.742552Yes
North Providence159325.622835Yes
Pawtucket338328.703889Yes
Providence7525718.404090Yes
Central Falls81911.206826Yes

Photograph of Ruth Platner from late December 2025

 

You can learn more about the author, Ruth Platner, at her profile page.


The banner image is a part of Charlestown’s zoning map showing some of Charlestown’s densest neighborhoods.