What city is 27523 in?

27523 is a Apex, NC mailing address. By land area, 9% lies inside Apex and 2% lies inside Cary; the rest is outside any Census-defined city or community.

What is the population of 27523?

About 20,269 people (±1,590), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,320.

What is the median household income in 27523?

$135,625 (±$17,644), compared with $72,388 for North 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 27523?

13 USPS carrier routes with 10,043 residential and 272 business mailboxes (10,315 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 27523?

The closest, measured center to center: 27519 (4.6 mi, Cary), 27502 (4.7 mi, Apex), 27517 (6.4 mi, Chapel Hill), 27713 (7.7 mi, Durham), 27513 (8.9 mi, Cary) and 27562 (9.2 mi, Apex).

27523 ZIP Code, Apex, NC

Q: What county is 27523 in?

27523 is mostly in Chatham County (67% of its land), with smaller parts in Wake County.

27523 is a ZIP code in Apex, North Carolina — mostly in Chatham County (67% of its land), with smaller parts in Wake County. It covers 39 square miles of land. The closest ZIP codes are 27519, 27502 and 27517. 20,269 people live here in 7,905 households. With about 526 people per square mile it is lightly settled, and most homes are owner-occupied (72%). Median household income is $135,625, well above the North Carolina median of $72,388; 43% of households have children under 18.

Quick facts

Mailing city: Apex, NC
County: Chatham County
Land area: 39 sq mi
Population: 20,269
Median household income: $135,625
Carrier routes: 13 (10,043 homes)

Key figures

Measure	Value
Residents	20,269
Households	7,905
Median household income	$135,625
Income per person	$65,208
Median age	39.1
Homeowners	72.3%
Median home value	$659,300
Median rent	$1,939
Bachelor's degree or higher	70.4%
Average commute (minutes)	23.5
Households with kids under 18	43.0%
Moved in the past year	13.8%
Below the poverty line	6.8%
Broadband internet	96.9%
Speak a non-English language at home	31.9%

Household income

% of households	Value
<$10K	4.4%
$10–15K	0.8%
$15–25K	3.7%
$25–35K	2.7%
$35–50K	3.7%
$50–75K	10.1%
$75–100K	12.3%
$100–150K	16.7%
$150–200K	13.7%
$200K+	31.9%

Age

% of all residents	Value
<10	14.8%
10–19	13.1%
20–24	4.1%
25–34	10.7%
35–44	19.4%
45–54	11.5%
55–64	10.7%
65–74	9.4%
75+	6.3%

Tenure

% of housing units	Value
Owned, with mortgage	48.1%
Owned outright	19.8%
Rented	25.8%
Vacant	6.4%

Type of building

% of housing units	Value
Detached house	65.7%
Townhome	12.0%
2–4 units	0.5%
5–19 units	8.9%
20+ units	9.6%
Mobile / other	3.4%

Businesses in 27523

368 business establishments with 3,140 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 80
Retail Trade: 33
Administrative and Support and Waste Management and Remediation Services: 31
Health Care and Social Assistance: 31
Accommodation and Food Services: 31
Other Services (except Public Administration): 31
Construction: 23
Real Estate and Rental and Leasing: 23

EDDM carrier routes

27523 has 13 USPS carrier routes with 10,043 residential and 272 business mailboxes. Open the EDDM route map.

Carrier routes in 27523

27523 has 13 USPS carrier routes (13 rural (R)) with 10,043 residential and 272 business mailboxes. Routes range from 401 homes (R057) to 1,144 homes (R053); the median route has 837 homes. The Census counted 7,905 households in 27523 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	2
500–749	4
750–999	4
1,000–1,499	3
1,500+	0

Best routes in 27523 for…

Most businesses

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

Route R035 — USPS business mailboxes 64, 653 homes
Route R002 — USPS business mailboxes 60, 563 homes
Route R021 — USPS business mailboxes 54, 1,103 homes
Route R057 — USPS business mailboxes 30, 401 homes
Route R013 — USPS business mailboxes 20, 444 homes

Select these 5 routes on the route map

Every carrier route in 27523

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R002	Rural	563	60	$109,263	—	—	—
R003	Rural	583	15	$91,298	—	—	—
R013	Rural	444	20	$89,845	—	—	—
R021	Rural	1,103	54	$153,883	—	—	—
R022	Rural	503	0	$130,702	—	—	—
R027	Rural	900	1	$68,436	—	—	—
R035	Rural	653	64	$149,048	—	—	—
R051	Rural	870	3	$193,285	—	—	—
R052	Rural	1,116	11	$91,298	—	—	—
R053	Rural	1,144	6	$127,984	—	—	—
R056	Rural	926	3	$33,374	—	—	—
R057	Rural	401	30	$141,139	—	—	—
R060	Rural	837	5	$141,139	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 27523 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

27519 — Cary town, NC (4.6 mi)
27502 — Apex town, NC (4.7 mi)
27517 — Chapel Hill town, NC (6.4 mi)
27713 — Durham city, NC (7.7 mi)
27513 — Cary town, NC (8.9 mi)
27562 — Apex town, NC (9.2 mi)
27560 — Morrisville town, NC (9.3 mi)
27511 — Cary town, NC (9.6 mi)

Areas that include 27523

Where it ranks

Mail every home in 27523

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) 27523, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 27523 in?: 27523 is a Apex, NC mailing address. By land area, 9% lies inside Apex and 2% lies inside Cary; the rest is outside any Census-defined city or community.
What county is 27523 in?: 27523 is mostly in Chatham County (67% of its land), with smaller parts in Wake County.
What is the population of 27523?: About 20,269 people (±1,590), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 17,320.
What is the median household income in 27523?: $135,625 (±$17,644), compared with $72,388 for North 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 27523?: 13 USPS carrier routes with 10,043 residential and 272 business mailboxes (10,315 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 27523?: The closest, measured center to center: 27519 (4.6 mi, Cary), 27502 (4.7 mi, Apex), 27517 (6.4 mi, Chapel Hill), 27713 (7.7 mi, Durham), 27513 (8.9 mi, Cary) and 27562 (9.2 mi, Apex).

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