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County ZIP codes · Wisconsin · FIPS 55065

Lafayette County, WI ZIP Codes

Lafayette County, Wisconsin has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 9 of the residential ones lie mainly in Lafayette County and 5 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $55,567 in 53818 (Platteville) to $90,250 in 53587 (South Wayne) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Lafayette County?

53504 · Argyle: $84k53510 · Belmont: $82k53516 · Blanchardville: $85k53522 · Browntown: $82k53530 · Darlington: $70k53541 · Gratiot: $58k53565 · Mineral Point: $85k53586 · Shullsburg: $71k53587 · South Wayne: $90k53599 · Woodford: –53803 · Benton: $80k53807 · Cuba City: $78k53811 · Hazel Green: $83k53818 · Platteville: $56k5356553530538185380753516535045358653541535875351053811535225380353504 · Argyle: $84k53510 · Belmont: $82k53516 · Blanchardville: $85k53522 · Browntown: $82k53530 · Darlington: $70k53541 · Gratiot: $58k53565 · Mineral Point: $85k53586 · Shullsburg: $71k53587 · South Wayne: $90k53599 · Woodford: –53803 · Benton: $80k53807 · Cuba City: $78k53811 · Hazel Green: $83k53818 · Platteville: $56k5356553530538185380753516535045358653541535875351053811535225380353504 · Argyle: $84k53510 · Belmont: $82k53516 · Blanchardville: $85k53522 · Browntown: $82k53530 · Darlington: $70k53541 · Gratiot: $58k53565 · Mineral Point: $85k53586 · Shullsburg: $71k53587 · South Wayne: $90k53599 · Woodford: –53803 · Benton: $80k53807 · Cuba City: $78k53811 · Hazel Green: $83k53818 · Platteville: $56k5356553530538185380753516535045358653541535105381153522
The residential ZIP codes of Lafayette 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 $70,806 and $83,690.

They carry 14 postal town names.

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

All 14 residential ZIP codes in Lafayette County

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

Residential ZIP codes mainly in Lafayette County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
53530 Darlington 4,569 35 $70k $182k 100%
53504 Argyle 2,281 25 $84k $221k 55%
53516 Blanchardville 2,238 26 $85k $307k 48%
53586 Shullsburg 2,211 22 $71k $166k 100%
53510 Belmont 1,435 34 $82k $230k 100%
53803 Benton 1,386 110 $80k $164k 100%
53587 South Wayne 1,177 20 $90k $204k 100%
53541 Gratiot 904 14 $58k $245k 100%
53599 Woodford 75 311 – $99k 100%

Partly in Lafayette County

Residential ZIP codes mainly in another county that reach at least 1% into Lafayette County, by their share here
In this county
53807 Cuba City 4,209 40 $78k $226k 41%
53565 Mineral Point 4,778 26 $85k $270k 29%
53811 Hazel Green 3,093 66 $83k $225k 17%
53818 Platteville 16,024 104 $56k $237k 17%
53522 Browntown 943 24 $82k $205k 5%

Download the 14 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 Lafayette County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Lafayette County and in the neighboring counties
ZIPIn LafayetteElsewhere
5381817%Grant County 81%; Iowa County 2%
5356529%Iowa County 71%
5380741%Grant County 59%
5381117%Grant County 83%
5350455%Green County 45%
5351648%Green County 36%; Iowa County 14%; Dane County 3%
535225%Green County 95%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Lafayette County's ZIP codes use 2 prefixes: 535 and 538.

Three-digit prefixes of Lafayette 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 Lafayette County's
PrefixSectional centerHereAll codes
535 Madison, WI (SCF 535) 10 87
538 Madison, WI (SCF 535) 4 22

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