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County ZIP codes · North Dakota · FIPS 38027

Eddy County, ND ZIP Codes

Eddy County, North Dakota has 7 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 4 of the residential ones lie mainly in Eddy County and 3 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $51,042 in 58356 (New Rockford) to $89,097 in 58421 (Carrington) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Eddy County?

58356 · New Rockford: $51k58374 · Sheyenne: $65k58380 · Tolna: $67k58381 · Warwick: $91k58421 · Carrington: $89k58445 · Grace City: $72k58464 · McHenry: $56k5842158374583565838158380584645844558356 · New Rockford: $51k58374 · Sheyenne: $65k58380 · Tolna: $67k58381 · Warwick: $91k58421 · Carrington: $89k58445 · Grace City: $72k58464 · McHenry: $56k5842158374583565838158380584645844558356 · New Rockford: $51k58374 · Sheyenne: $65k58380 · Tolna: $67k58381 · Warwick: $91k58421 · Carrington: $89k58445 · Grace City: $72k58464 · McHenry: $56k58421583745835658381583805846458445
The residential ZIP codes of Eddy 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?

They carry 7 postal town names: Carrington, New Rockford, Sheyenne, Warwick, Tolna, McHenry, Grace City.

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

All 7 residential ZIP codes in Eddy County

4 ZIP codes lie mainly in Eddy County; 3 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Eddy County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58356 New Rockford 1,627 6 $51k $124k 81%
58374 Sheyenne 703 3 $65k $151k 52%
58381 Warwick 482 3 $91k $208k 61%
58464 McHenry 270 2 $56k $111k 55%

Partly in Eddy County

Residential ZIP codes mainly in another county that reach at least 1% into Eddy County, by their share here
In this county
58380 Tolna 423 3 $67k – 36%
58445 Grace City 145 2 $72k $109k 35%
58421 Carrington 2,969 7 $89k $171k 3%

Download the 7 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?

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

Share of each ZIP code's land in Eddy County and in the neighboring counties
ZIPIn EddyElsewhere
584213%Foster County 83%; Stutsman County 8%; Wells County 6%
5835681%Wells County 13%; Foster County 6%
5837452%Benson County 36%; Wells County 12%
5838161%Benson County 39%
5838036%Nelson County 49%; Benson County 15%
5846455%Foster County 36%; Griggs County 10%
5844535%Foster County 65%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Eddy County's ZIP codes use 2 prefixes: 583 and 584.

Three-digit prefixes of Eddy 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 Eddy County's
PrefixSectional centerHereAll codes
583 Grand Forks, ND (SCF 582) 4 50
584 Fargo, ND (SCF 580) 3 62

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