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County ZIP codes · New Hampshire · FIPS 33013

Merrimack County, NH ZIP Codes

Merrimack County, New Hampshire has 32 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 29 residential and 3 for PO boxes or a single organization. 28 of the residential ones lie mainly in Merrimack County and 1 mainly in a neighboring county; 4 cross the county line. Median household income ranges from $71,685 in 03230 (Danbury) to $172,857 in 03304 (Bow) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Merrimack County?

03046 · Dunbarton: $124k03106 · Hooksett: $118k03216 · Andover: $88k03220 · Belmont: $68k03221 · Bradford: $110k03224 · Canterbury: $138k03229 · Contoocook: $137k03230 · Danbury: $72k03231 · East Andover: –03233 · Elkins: $120k03234 · Epsom: $98k03235 · Franklin: $72k03242 · Henniker: $95k03243 · Hill: $83k03255 · Newbury: $117k03257 · New London: $107k03258 · Chichester: $109k03260 · North Sutton: $117k03263 · Pittsfield: $74k03268 · Salisbury: $112k03273 · South Sutton: $188k03275 · Suncook: $83k03276 · Tilton: $82k03278 · Warner: $95k03287 · Wilmot: $118k03301 · Concord: $87k03303 · Concord: $81k03304 · Bow: $173k03307 · Loudon: $107k03221033030327803301033070327503224032300327603287032160322903242032200310603255033040304603234032680323503263032580326003243032570327303046 · Dunbarton: $124k03106 · Hooksett: $118k03216 · Andover: $88k03220 · Belmont: $68k03221 · Bradford: $110k03224 · Canterbury: $138k03229 · Contoocook: $137k03230 · Danbury: $72k03231 · East Andover: –03233 · Elkins: $120k03234 · Epsom: $98k03235 · Franklin: $72k03242 · Henniker: $95k03243 · Hill: $83k03255 · Newbury: $117k03257 · New London: $107k03258 · Chichester: $109k03260 · North Sutton: $117k03263 · Pittsfield: $74k03268 · Salisbury: $112k03273 · South Sutton: $188k03275 · Suncook: $83k03276 · Tilton: $82k03278 · Warner: $95k03287 · Wilmot: $118k03301 · Concord: $87k03303 · Concord: $81k03304 · Bow: $173k03307 · Loudon: $107k032210330303278033010330703275032240323003276032870321603229032420322003106032550330403046032340326803235032630325803260032430325703046 · Dunbarton: $124k03106 · Hooksett: $118k03216 · Andover: $88k03220 · Belmont: $68k03221 · Bradford: $110k03224 · Canterbury: $138k03229 · Contoocook: $137k03230 · Danbury: $72k03231 · East Andover: –03233 · Elkins: $120k03234 · Epsom: $98k03235 · Franklin: $72k03242 · Henniker: $95k03243 · Hill: $83k03255 · Newbury: $117k03257 · New London: $107k03258 · Chichester: $109k03260 · North Sutton: $117k03263 · Pittsfield: $74k03268 · Salisbury: $112k03273 · South Sutton: $188k03275 · Suncook: $83k03276 · Tilton: $82k03278 · Warner: $95k03287 · Wilmot: $118k03301 · Concord: $87k03303 · Concord: $81k03304 · Bow: $173k03307 · Loudon: $107k03221033030327803301033070327503230032760328703216032290324203220031060325503304032340326803263032580326003257
The residential ZIP codes of Merrimack 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 $82,910 and $117,045.

They carry 28 postal town names.

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

All 29 residential ZIP codes in Merrimack County

28 ZIP codes lie mainly in Merrimack County; 1 more reaches into it from a neighboring county and follows the first table.

Residential ZIP codes mainly in Merrimack County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
03301 Concord 33,995 691 $87k $371k 100%
03303 Concord 16,571 244 $81k $296k 100%
03106 Hooksett 15,032 417 $118k $408k 100%
03275 Suncook 12,205 284 $83k $337k 100%
03276 Tilton 9,015 229 $82k $273k 72%
03235 Franklin 8,903 298 $72k $264k 100%
03304 Bow 8,335 296 $173k $507k 100%
03242 Henniker 6,197 140 $95k $357k 100%
03229 Contoocook 6,046 140 $137k $506k 100%
03307 Loudon 5,724 122 $107k $365k 100%
03234 Epsom 4,939 144 $98k $338k 100%
03257 New London 4,484 190 $107k $559k 97%
03263 Pittsfield 4,105 168 $74k $295k 100%
03046 Dunbarton 3,097 100 $124k $484k 100%
03278 Warner 3,079 49 $95k $357k 100%
03258 Chichester 2,721 129 $109k $410k 100%
03224 Canterbury 2,392 56 $138k $439k 100%
03221 Bradford 2,200 45 $110k $325k 100%
03216 Andover 2,046 51 $88k $359k 100%
03255 Newbury 2,015 56 $117k $465k 100%
03287 Wilmot 1,487 51 $118k $400k 100%
03268 Salisbury 1,468 48 $112k $363k 100%
03230 Danbury 1,451 36 $72k $241k 100%
03260 North Sutton 976 46 $117k $370k 100%
03243 Hill 952 37 $83k $304k 94%
03273 South Sutton 361 78 $188k $359k 100%
03233 Elkins 156 351 $120k $508k 100%
03231 East Andover 89 311 – $605k 100%

Partly in Merrimack County

Residential ZIP codes mainly in another county that reach at least 1% into Merrimack County, by their share here
In this county
03220 Belmont 7,393 244 $68k $316k 1%

Download the 32 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?

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

Share of each ZIP code's land in Merrimack County and in the neighboring counties
ZIPIn MerrimackElsewhere
0327672%Belknap County 28%
032201%Belknap County 99%
0325797%Sullivan County 3%
0324394%Grafton County 6%

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

PO Box and single-organization ZIP codes

ZIP codes in Merrimack County without a residential area (GeoNames postal codes)
ZIPPostal name
03272South Newbury
03302Concord
03305Concord

Source: GeoNames postal codes (CC BY 4.0).

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Merrimack County's ZIP codes use 4 prefixes: 030, 031, 032 and 033.

Three-digit prefixes of Merrimack 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 Merrimack County's
PrefixSectional centerHereAll codes
030 Manchester, NH (SCF 030) 1 38
031 Manchester, NH (SCF 030) 1 10
032 Manchester, NH (SCF 030) 24 64
033 Manchester, NH (SCF 030) 6 6

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