ZIP code · Middlesex · North Carolina · United States

ZIP code 27557 — Middlesex

ZIP code 27557 serves Middlesex, North Carolina.

Postal code
27557
Single source Value from one source, not cross-checked.
City
Middlesex
County
Johnston FIPS 37101
State
North Carolina
Country
United States
Coordinates
35.7665, -78.2062 — precision precise (locality)
View on OpenStreetMap
Population
8,407 (ZCTA, ACS 5-year)
Population density
125 / sq mi
Land area
67.2 sq mi (173.9 km²) (ZCTA, ACS 5-year)
Median household income
$65,833
Per-capita income
$32,037
Median age
41.7
Households
2,896
Housing units
3,260
Median home value
$167,300
Median gross rent
$851 / month
Congressional districts
NC-1 (also NC-13) (119th Congress)
USDA hardiness zone
8a (10 to 15 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/New_York (UTC−5 / UTC−4 DST)
Area code
252 (from the nearest rate centre)
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 90°F), coldest Jan (avg low 31°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F535664738087908882726356
Avg low °F313138475665706863503934
Precip in3.73.14.13.43.84.15.94.46.43.83.43.7

NOAA 1991–2020 climate normals from the nearest station: CLAYTON 3E (14.1 mi) · NOAA NCEI

Places in ZIP 27557

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page