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County ZIP codes · North Carolina · FIPS 37101

Johnston County, NC ZIP Codes

Johnston County, North Carolina has 21 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 11 of the residential ones lie mainly in Johnston County and 10 mainly in a neighboring county; 15 cross the county line. Median household income ranges from $53,036 in 28334 (Dunn) to $115,035 in 27527 (Clayton) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Johnston County?

27501 · Angier: $73k27504 · Benson: $67k27520 · Clayton: $86k27524 · Four Oaks: $76k27527 · Clayton: $115k27529 · Garner: $86k27542 · Kenly: $66k27555 · Micro: $45k27557 · Middlesex: $72k27568 · Pine Level: $66k27569 · Princeton: $79k27576 · Selma: $67k27577 · Smithfield: $63k27591 · Wendell: $85k27592 · Willow Spring: $104k27593 · Wilsons Mills: –27597 · Zebulon: $85k27603 · Raleigh: $91k27863 · Pikeville: $78k28334 · Dunn: $53k28366 · Newton Grove: $53k27524283342750427597275772836627542275692757627520275912755727501276032786327529275272759227501 · Angier: $73k27504 · Benson: $67k27520 · Clayton: $86k27524 · Four Oaks: $76k27527 · Clayton: $115k27529 · Garner: $86k27542 · Kenly: $66k27555 · Micro: $45k27557 · Middlesex: $72k27568 · Pine Level: $66k27569 · Princeton: $79k27576 · Selma: $67k27577 · Smithfield: $63k27591 · Wendell: $85k27592 · Willow Spring: $104k27593 · Wilsons Mills: –27597 · Zebulon: $85k27603 · Raleigh: $91k27863 · Pikeville: $78k28334 · Dunn: $53k28366 · Newton Grove: $53k27524283342750427597275772836627542275692757627520275912755727501276032786327529275272759227501 · Angier: $73k27504 · Benson: $67k27520 · Clayton: $86k27524 · Four Oaks: $76k27527 · Clayton: $115k27529 · Garner: $86k27542 · Kenly: $66k27555 · Micro: $45k27557 · Middlesex: $72k27568 · Pine Level: $66k27569 · Princeton: $79k27576 · Selma: $67k27577 · Smithfield: $63k27591 · Wendell: $85k27592 · Willow Spring: $104k27593 · Wilsons Mills: –27597 · Zebulon: $85k27603 · Raleigh: $91k27863 · Pikeville: $78k28334 · Dunn: $53k28366 · Newton Grove: $53k27524283342759727577283662754227569275202750127603278632752727592
The residential ZIP codes of Johnston County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $66,724 and $85,224.

They carry 20 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 21 residential ZIP codes in Johnston County

11 ZIP codes lie mainly in Johnston County; 10 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Johnston County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
27520 Clayton 48,014 678 $86k $321k 96%
27527 Clayton 39,256 890 $115k $390k 100%
27577 Smithfield 28,354 273 $63k $260k 100%
27576 Selma 21,624 266 $67k $208k 100%
27504 Benson 17,079 190 $67k $246k 97%
27524 Four Oaks 13,999 104 $76k $213k 92%
27542 Kenly 9,850 109 $66k $214k 64%
27569 Princeton 8,833 110 $79k $222k 79%
27568 Pine Level 1,542 1,270 $66k $231k 100%
27555 Micro 573 1,368 $45k $171k 100%
27593 Wilsons Mills no residents 0 – – 100%

Partly in Johnston County

Residential ZIP codes mainly in another county that reach at least 1% into Johnston County, by their share here
In this county
27592 Willow Spring 21,114 538 $104k $359k 39%
27501 Angier 24,806 395 $73k $273k 37%
27529 Garner 55,242 957 $86k $356k 34%
27557 Middlesex 8,657 129 $72k $200k 32%
27591 Wendell 29,838 448 $85k $312k 30%
27597 Zebulon 30,184 255 $85k $313k 23%
28366 Newton Grove 3,769 44 $53k $152k 20%
28334 Dunn 22,873 143 $53k $176k 8%
27603 Raleigh 53,972 1,050 $91k $383k 5%
27863 Pikeville 13,729 208 $78k $212k 1%

Download the 21 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

15 ZIP codes of Johnston County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Johnston County and in the neighboring counties
ZIPIn JohnstonElsewhere
2752934%Wake County 66%
276035%Wake County 95%
2752096%Wake County 4%
2759723%Wake County 42%; Franklin County 28%; Nash County 6%
2759130%Wake County 70%
2750137%Harnett County 62%
283348%Sampson County 47%; Harnett County 37%; Cumberland County 8%
2759239%Wake County 60%
2750497%Harnett County 3%
2752492%Wayne County 8%
278631%Wayne County 96%; Greene County 3%
2754264%Wilson County 27%; Wayne County 8%
2756979%Wayne County 21%
2755732%Nash County 65%; Wilson County 3%
2836620%Sampson County 80%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Johnston County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Johnston County's ZIP codes use 4 prefixes: 275, 276, 278 and 283.

Three-digit prefixes of Johnston County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Johnston County's
PrefixSectional centerHereAll codes
275 Raleigh, NC (SCF 275) 17 80
276 Raleigh, NC (SCF 275) 1 44
278 Rocky Mount, NC (SCF 278) 1 93
283 Fayetteville, NC (SCF 283) 2 86

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.