29485 ZIP Code, Summerville, SC

29485 is a ZIP code in Summerville, South Carolina — mostly in Dorchester County (94% of its land), with smaller parts in Charleston County. It covers 49 square miles of land. The closest ZIP codes are 29420, 29456 and 29418. 58,507 people live here in 22,107 households, which puts it among the most populous 1% of South Carolina ZIP codes. At about 1,205 people per square mile it has suburban density, and most homes are owner-occupied (74%). Median household income is $82,987, above the South Carolina median of $69,324.

Quick facts

Key figures

MeasureValue
Residents58,507
Households22,107
Median household income$82,987
Income per person$40,122
Median age38.1
Homeowners74.1%
Median home value$341,600
Median rent$1,574
Bachelor's degree or higher36.7%
Average commute (minutes)30.2
Households with kids under 1835.9%
Moved in the past year13.3%
Below the poverty line10.4%
Broadband internet94.3%
Speak a non-English language at home7.1%

Household income

% of householdsValue
<$10K4.5%
$10–15K3.2%
$15–25K3.5%
$25–35K6.4%
$35–50K8.4%
$50–75K19.5%
$75–100K13.3%
$100–150K18.6%
$150–200K12.9%
$200K+9.7%

Age

% of all residentsValue
<1012.7%
10–1915.2%
20–245.3%
25–3412.7%
35–4414.3%
45–5412.6%
55–6411.8%
65–749.2%
75+6.0%

Tenure

% of housing unitsValue
Owned, with mortgage50.6%
Owned outright18.9%
Rented24.1%
Vacant6.3%

Type of building

% of housing unitsValue
Detached house67.6%
Townhome7.2%
2–4 units5.3%
5–19 units10.1%
20+ units4.4%
Mobile / other5.5%

Businesses in 29485

901 business establishments with 9,573 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

29485 has 37 USPS carrier routes with 27,903 residential and 949 business mailboxes. Open the EDDM route map.

Carrier routes in 29485

29485 has 37 USPS carrier routes (10 city (C), 27 rural (R)) with 27,903 residential and 949 business mailboxes. Routes range from 466 homes (R045) to 1,323 homes (R046); the median route has 704 homes. The Census counted 22,107 households in 29485 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4991
500–74923
750–9998
1,000–1,4995
1,500+0

Best routes in 29485 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route R027 — USPS business mailboxes 222, 835 homes
  2. Route R026 — USPS business mailboxes 128, 763 homes
  3. Route C008 — USPS business mailboxes 112, 595 homes
  4. Route C002 — USPS business mailboxes 99, 505 homes
  5. Route R025 — USPS business mailboxes 60, 684 homes

Select these 5 routes on the route map

Every carrier route in 29485

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City1,04314$84,276———
C002City50599$84,276———
C003City7441$68,330———
C004City5270$106,483———
C005City74013$103,369———
C006City80033$84,276———
C007City66245$40,182———
C008City595112$94,890———
C009City6739$66,941———
C010City70410$84,276———
R020Rural60235$128,380———
R021Rural6253$137,398———
R022Rural74018$40,182———
R023Rural57313$118,986———
R024Rural6724$103,226———
R025Rural68460$104,524———
R026Rural763128$103,226———
R027Rural835222$103,226———
R028Rural6097$92,618———
R029Rural5854$123,223———
R030Rural6770$97,926———
R031Rural5930$65,622———
R032Rural7221$110,195———
R033Rural8670$113,340———
R034Rural8903$103,226———
R035Rural7440$104,524———
R036Rural6503$123,223———
R037Rural64537$104,524———
R038Rural7870$80,297———
R039Rural1,2199$104,524———
R040Rural6865$80,297———
R041Rural87111$101,425———
R042Rural1,2321$123,223———
R043Rural78446$105,228———
R044Rural1,0663$92,618———
R045Rural4660$92,618———
R046Rural1,3230$92,618———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 29485 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

Areas that include 29485

Where it ranks

Mail every home in 29485

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 29485, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 29485 in?
29485 is a Summerville, SC mailing address. By land area, 30% lies inside North Charleston, 16% lies inside Summerville and 2% lies inside Lincolnville; the rest is outside any Census-defined city or community.
What county is 29485 in?
29485 is mostly in Dorchester County (94% of its land), with smaller parts in Charleston County.
What is the population of 29485?
About 58,507 people (±2,732), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 57,181.
What is the median household income in 29485?
$82,987 (±$5,666), compared with $69,324 for South Carolina as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 29485?
37 USPS carrier routes with 27,903 residential and 949 business mailboxes (28,854 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 29485?
The closest, measured center to center: 29420 (6.2 mi, North Charleston), 29456 (6.5 mi, North Charleston), 29418 (6.7 mi, North Charleston), 29483 (6.9 mi, Summerville), 29470 (8.2 mi, Ravenel) and 29414 (8.6 mi, Charleston).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.