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County ZIP codes · Minnesota · FIPS 27059

Isanti County, MN ZIP Codes

Isanti County, Minnesota has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 5 of the residential ones lie mainly in Isanti County and 8 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $69,191 in 55006 (Braham) to $114,614 in 55079 (Stacy) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Isanti County?

55006 · Braham: $69k55008 · Cambridge: $85k55017 · Dalbo: $62k55029 · Grandy: $74k55040 · Isanti: $91k55056 · North Branch: $96k55070 · Saint Francis: $109k55079 · Stacy: $115k55080 · Stanchfield: $102k55371 · Princeton: $94k55398 · Zimmerman: $103k56353 · Milaca: $79k56358 · Ogilvie: $84k55371563535635855056550085500655398550405508055079550705501755006 · Braham: $69k55008 · Cambridge: $85k55017 · Dalbo: $62k55029 · Grandy: $74k55040 · Isanti: $91k55056 · North Branch: $96k55070 · Saint Francis: $109k55079 · Stacy: $115k55080 · Stanchfield: $102k55371 · Princeton: $94k55398 · Zimmerman: $103k56353 · Milaca: $79k56358 · Ogilvie: $84k55371563535635855056550085500655398550405508055079550705501755006 · Braham: $69k55008 · Cambridge: $85k55017 · Dalbo: $62k55029 · Grandy: $74k55040 · Isanti: $91k55056 · North Branch: $96k55070 · Saint Francis: $109k55079 · Stacy: $115k55080 · Stanchfield: $102k55371 · Princeton: $94k55398 · Zimmerman: $103k56353 · Milaca: $79k56358 · Ogilvie: $84k5537156353563585505655008550065539855040550805507955070
The residential ZIP codes of Isanti 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 $83,594 and $101,964.

They carry 13 postal town names.

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

All 13 residential ZIP codes in Isanti County

5 ZIP codes lie mainly in Isanti County; 8 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Isanti County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
55008 Cambridge 16,729 167 $85k $291k 99%
55040 Isanti 14,837 151 $91k $314k 100%
55080 Stanchfield 3,180 46 $102k $356k 76%
55017 Dalbo 799 31 $62k $326k 100%
55029 Grandy 31 121 $74k – 100%

Partly in Isanti County

Residential ZIP codes mainly in another county that reach at least 1% into Isanti County, by their share here
In this county
55070 Saint Francis 8,441 331 $109k $329k 37%
55006 Braham 3,694 48 $69k $223k 34%
55056 North Branch 14,753 148 $96k $331k 31%
55079 Stacy 8,508 134 $115k $352k 30%
55371 Princeton 18,103 92 $94k $327k 26%
55398 Zimmerman 17,688 242 $103k $355k 17%
56358 Ogilvie 3,107 25 $84k $261k 4%
56353 Milaca 9,546 50 $79k $263k 3%

Download the 13 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?

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

Share of each ZIP code's land in Isanti County and in the neighboring counties
ZIPIn IsantiElsewhere
5537126%Mille Lacs County42%; Sherburne County30%; Benton County2%
5539817%Sherburne County83%
5500899%
5505631%Chisago County69%
563533%Mille Lacs County95%; Kanabec County3%
5507930%Chisago County43%; Anoka County27%
5507037%Anoka County64%
5500634%Kanabec County38%; Pine County20%; Chisago County8%
5508076%Chisago County24%
563584%Kanabec County82%; Mille Lacs County13%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Isanti County's ZIP codes use 3 prefixes: 550, 553 and 563.

Three-digit prefixes of Isanti 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 Isanti County's
PrefixSectional centerHereAll codes
550St Paul, MN (SCF 550)974
553Minneapolis, MN (SCF 553)293
563Saint Cloud, MN (SCF 563)283

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