What city is 29420 in?

29420 is a North Charleston, SC mailing address. By land area, 84% lies inside North Charleston; the rest is outside any Census-defined city or community.

What is the population of 29420?

About 23,959 people (±1,686), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 23,619.

What is the median household income in 29420?

$72,661 (±$5,756), 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 29420?

13 USPS carrier routes with 10,815 residential and 362 business mailboxes (11,179 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 29420?

The closest, measured center to center: 29418 (1.6 mi, North Charleston), 29404 (3.7 mi, North Charleston), 29456 (3.7 mi, North Charleston), 29406 (3.8 mi, North Charleston), 29410 (5 mi, Hanahan) and 29414 (6.2 mi, Charleston).

29420 ZIP Code, North Charleston, SC

Q: What county is 29420 in?

29420 is mostly in Dorchester County (60% of its land), with smaller parts in Charleston County.

29420 is a ZIP code in North Charleston, South Carolina — mostly in Dorchester County (60% of its land), with smaller parts in Charleston County. It covers 10 square miles of land. The closest ZIP codes are 29418, 29404 and 29456. 23,959 people live here in 9,515 households. At about 2,392 people per square mile it has suburban density, and owners and renters are mixed (62% own). Median household income is $72,661, close to the South Carolina median of $69,324.

Quick facts

Mailing city: North Charleston, SC
County: Dorchester County
Land area: 10 sq mi
Population: 23,959
Median household income: $72,661
Carrier routes: 13 (10,815 homes)

Key figures

Measure	Value
Residents	23,959
Households	9,515
Median household income	$72,661
Income per person	$39,165
Median age	34.7
Homeowners	62.2%
Median home value	$331,700
Median rent	$1,529
Bachelor's degree or higher	32.4%
Average commute (minutes)	27.6
Households with kids under 18	32.0%
Moved in the past year	14.2%
Below the poverty line	12.0%
Broadband internet	95.8%
Speak a non-English language at home	10.8%

Household income

% of households	Value
<$10K	2.9%
$10–15K	3.0%
$15–25K	4.1%
$25–35K	7.7%
$35–50K	14.3%
$50–75K	20.5%
$75–100K	12.4%
$100–150K	18.3%
$150–200K	8.5%
$200K+	8.3%

Age

% of all residents	Value
<10	9.6%
10–19	14.6%
20–24	8.5%
25–34	17.7%
35–44	13.2%
45–54	12.0%
55–64	12.0%
65–74	7.8%
75+	4.5%

Tenure

% of housing units	Value
Owned, with mortgage	44.7%
Owned outright	15.0%
Rented	35.9%
Vacant	4.4%

Type of building

% of housing units	Value
Detached house	60.8%
Townhome	6.6%
2–4 units	3.3%
5–19 units	10.3%
20+ units	7.8%
Mobile / other	11.1%

Businesses in 29420

325 business establishments with 4,704 employees (ZIP Codes Business Patterns 2023).

Construction: 44
Accommodation and Food Services: 42
Professional, Scientific, and Technical Services: 36
Health Care and Social Assistance: 33
Real Estate and Rental and Leasing: 26
Other Services (except Public Administration): 25
Retail Trade: 24
Administrative and Support and Waste Management and Remediation Services: 18

EDDM carrier routes

29420 has 13 USPS carrier routes with 10,815 residential and 362 business mailboxes. Open the EDDM route map.

Carrier routes in 29420

29420 has 13 USPS carrier routes (13 rural (R)) with 10,815 residential and 362 business mailboxes. Routes range from 322 homes (R101) to 1,178 homes (R091); the median route has 853 homes. The Census counted 9,515 households in 29420 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	1
500–749	4
750–999	5
1,000–1,499	3
1,500+	0

Best routes in 29420 for…

Most businesses

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

Route R100 — USPS business mailboxes 167, 913 homes
Route R033 — USPS business mailboxes 60, 742 homes
Route R009 — USPS business mailboxes 48, 1,005 homes
Route R101 — USPS business mailboxes 38, 322 homes
Route R015 — USPS business mailboxes 19, 1,150 homes

Select these 5 routes on the route map

Every carrier route in 29420

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R002	Rural	862	3	$55,502	—	—	—
R009	Rural	1,005	48	$52,063	—	—	—
R015	Rural	1,150	19	$43,305	—	—	—
R030	Rural	853	1	$51,264	—	—	—
R033	Rural	742	60	$75,878	—	—	—
R037	Rural	599	4	$43,305	—	—	—
R040	Rural	832	1	$43,305	—	—	—
R044	Rural	743	0	$125,076	—	—	—
R074	Rural	663	6	$100,547	—	—	—
R077	Rural	953	2	$137,398	—	—	—
R091	Rural	1,178	13	$52,688	—	—	—
R100	Rural	913	167	$125,076	—	—	—
R101	Rural	322	38	$51,264	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 29420 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

29418 — North Charleston city, SC (1.6 mi)
29404 — North Charleston city, SC (3.7 mi)
29456 — North Charleston city, SC (3.7 mi)
29406 — North Charleston city, SC (3.8 mi)
29410 — Hanahan city, SC (5 mi)
29414 — Charleston city, SC (6.2 mi)
29485 — North Charleston city, SC (6.2 mi)
29405 — North Charleston city, SC (8.9 mi)

Areas that include 29420

North Charleston, SC ZIP codes — 7 ZIP codes
Charleston County ZIP codes — 27 ZIP codes
Dorchester County ZIP codes — 13 ZIP codes
South Carolina ZIP code data

Where it ranks

Mail every home in 29420

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) 29420, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 29420 in?: 29420 is a North Charleston, SC mailing address. By land area, 84% lies inside North Charleston; the rest is outside any Census-defined city or community.
What county is 29420 in?: 29420 is mostly in Dorchester County (60% of its land), with smaller parts in Charleston County.
What is the population of 29420?: About 23,959 people (±1,686), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 23,619.
What is the median household income in 29420?: $72,661 (±$5,756), 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 29420?: 13 USPS carrier routes with 10,815 residential and 362 business mailboxes (11,179 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 29420?: The closest, measured center to center: 29418 (1.6 mi, North Charleston), 29404 (3.7 mi, North Charleston), 29456 (3.7 mi, North Charleston), 29406 (3.8 mi, North Charleston), 29410 (5 mi, Hanahan) and 29414 (6.2 mi, Charleston).

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