29485 ZIP Code Profile, Map, Data & Demographics

ZIP Code Type: STANDARD
County: Dorchester County
Centroid: Latitude 32.975, Longitude -80.18
Time Zone: Eastern Time Zone (UTC -5 hours)
Observes DST: Yes

ZIP Code 29485 has segments in 2 Counties (Charleston, Dorchester).

Businesses Addresses: 1,103
PO Box Addresses: 421
Residential Addresses: 25,243

Multi-Family Addresses: 3,051
Single Family Addresses: 22,192

The ZIP Code maps and database are updated 4 times per year.
Database updated: March 1, 2026, Maps updated: May 1, 2024.

Summerville, SC 29485 Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	62,230 (100%)
Population in Households	61,786 (99.3%)
Population in Families	52,391 (84.2%)
Population in Group Quarters¹	444 ( 0.7%)
Population Density	1,376
Diversity Index²	57


INCOME
Median Household Income	$85,583
Average Household Income	$110,083
% of Income for Mortgage⁴	25%
Per Capita Income	$43,242
Wealth Index⁵	98
Socioeconomic Status Index⁶	Moderate (52.4)

HOUSING
Total HU (Housing Units)	25,770 (100%)
Owner Occupied HU	18,311 (71.1%)
Renter Occupied HU	6,119 (23.7%)
Vacant Housing Units	1,340 ( 5.2%)
Median Home Value	$347,407
Average Home Value	$367,799
Housing Affordability Index³	94

HOUSEHOLDS
Total Households	24,430
Average Household Size	2.53
Family Households	17,422
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Summerville, SC 29485 - Peer Comparisons by Rank and Percentile

The table below compares 29485 to the other 396 ZIP Codes in South Carolina by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	1.16%	1.33%
Households	1.91%	1.76%
Families		1.60%
Median Household Income		2.23%
Per Capita Income		2.80%
Owner Occupied HU		1.90%

Variable Description	Rank	Percentile
Total Population	# 3	99th
Population Density	# 47	88th
Median Household Income	# 46	89th
Housing Affordability Index	# 124	31st
Per Capita Income	# 78	81st
Diversity Index	# 143	64th

29485 ZIP Code Profile, Map, Data & Demographics

ZIP Code 29485: Basic Data & USPS Preferred City Name

Summerville, SC 29485 Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Summerville, SC 29485 - Peer Comparisons by Rank and Percentile

Popular Places Near ZIP Code 29485

Use HTL Address Research for a South Carolina Address and get...

Quick & Easy Ways to...

South Carolina Census Data Comparison Tool

More Tools and Resources:

Dorchester County