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County ZIP codes · North Dakota · FIPS 38023

Divide County, ND ZIP Codes

Divide County, North Dakota has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 5 of the residential ones lie mainly in Divide County and 5 mainly in a neighboring county; 6 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Divide County?

58730 · Crosby: $84k58755 · McGregor: $139k58765 · Noonan: $119k58795 · Wildrose: $117k58830 · Alamo: $54k58833 · Ambrose: $117k58844 · Fortuna: $41k58845 · Grenora: $92k58856 · Zahl: $105k59275 · Westby: $49k5927558830588455873058856588445879558765587555883358730 · Crosby: $84k58755 · McGregor: $139k58765 · Noonan: $119k58795 · Wildrose: $117k58830 · Alamo: $54k58833 · Ambrose: $117k58844 · Fortuna: $41k58845 · Grenora: $92k58856 · Zahl: $105k59275 · Westby: $49k5927558830588455873058856588445879558765587555883358730 · Crosby: $84k58755 · McGregor: $139k58765 · Noonan: $119k58795 · Wildrose: $117k58830 · Alamo: $54k58833 · Ambrose: $117k58844 · Fortuna: $41k58845 · Grenora: $92k58856 · Zahl: $105k59275 · Westby: $49k5927558830588455873058856588445879558765
The residential ZIP codes of Divide 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).

All 10 residential ZIP codes in Divide County

5 ZIP codes lie mainly in Divide County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Divide County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
58730 Crosby 1,306 5 $84k $158k 100%
58765 Noonan 459 3 $119k $105k 100%
58795 Wildrose 414 2 $117k $149k 54%
58844 Fortuna 81 0 $41k – 100%
58833 Ambrose 67 1 $117k – 100%

Partly in Divide County

Residential ZIP codes mainly in another county that reach at least 1% into Divide County, by their share here
In this county
58845 Grenora 584 2 $92k – 49%
58755 McGregor 133 1 $139k $96k 43%
58830 Alamo 66 0 $54k $163k 40%
58856 Zahl 211 1 $105k – 34%
59275 Westby 436 1 $49k $83k 24%

Download the 10 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?

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

Share of each ZIP code's land in Divide County and in the neighboring counties
ZIPIn DivideElsewhere
5884549%Williams County51%
5927524%Sheridan County76%
5879554%Williams County46%
5885634%Williams County66%
5875543%Williams County44%; Burke County13%
5883040%Williams County60%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Divide County's ZIP codes use 3 prefixes: 587, 588 and 592.

Three-digit prefixes of Divide 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 Divide County's
PrefixSectional centerHereAll codes
587Bismarck, ND (SCF 585)464
588Bismarck, ND (SCF 585)517
592Billings, MT (SCF 590)141

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