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County ZIP codes · Indiana · FIPS 18141

St. Joseph County, IN ZIP Codes

St. Joseph County, Indiana has 30 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 24 residential and 6 for PO boxes or a single organization. 20 of the residential ones lie mainly in St. Joseph County and 4 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $42,537 in 46613 (South Bend) to $122,129 in 46530 (Granger) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of St. Joseph County?

46506 · Bremen: $79k46530 · Granger: $122k46536 · Lakeville: $78k46544 · Mishawaka: $59k46545 · Mishawaka: $57k46550 · Nappanee: $84k46552 · New Carlisle: $91k46554 · North Liberty: $88k46556 · Notre Dame: –46561 · Osceola: $92k46573 · Wakarusa: $86k46574 · Walkerton: $76k46595 · Wyatt: –46601 · South Bend: $31k46613 · South Bend: $43k46614 · South Bend: $74k46615 · South Bend: $63k46616 · South Bend: $59k46617 · South Bend: $74k46619 · South Bend: $48k46624 · South Bend: –46628 · South Bend: $62k46635 · South Bend: $82k46637 · South Bend: $72k4650646574465504655446614465524654446573465364662846619465304656146545466374661346617466014655646506 · Bremen: $79k46530 · Granger: $122k46536 · Lakeville: $78k46544 · Mishawaka: $59k46545 · Mishawaka: $57k46550 · Nappanee: $84k46552 · New Carlisle: $91k46554 · North Liberty: $88k46556 · Notre Dame: –46561 · Osceola: $92k46573 · Wakarusa: $86k46574 · Walkerton: $76k46595 · Wyatt: –46601 · South Bend: $31k46613 · South Bend: $43k46614 · South Bend: $74k46615 · South Bend: $63k46616 · South Bend: $59k46617 · South Bend: $74k46619 · South Bend: $48k46624 · South Bend: –46628 · South Bend: $62k46635 · South Bend: $82k46637 · South Bend: $72k4650646574465504655446614465524654446573465364662846619465304656146545466374661346506 · Bremen: $79k46530 · Granger: $122k46536 · Lakeville: $78k46544 · Mishawaka: $59k46545 · Mishawaka: $57k46550 · Nappanee: $84k46552 · New Carlisle: $91k46554 · North Liberty: $88k46556 · Notre Dame: –46561 · Osceola: $92k46573 · Wakarusa: $86k46574 · Walkerton: $76k46595 · Wyatt: –46601 · South Bend: $31k46613 · South Bend: $43k46614 · South Bend: $74k46615 · South Bend: $63k46616 · South Bend: $59k46617 · South Bend: $74k46619 · South Bend: $48k46628 · South Bend: $62k46635 · South Bend: $82k46637 · South Bend: $72k46506465744655046554466144655246544465734653646628466194653046545
The residential ZIP codes of St. Joseph 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 $58,829 and $81,944.

They carry 13 postal town names.

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

All 24 residential ZIP codes in St. Joseph County

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

Residential ZIP codes mainly in St. Joseph County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
46530 Granger 31,598 1,299 $122k $345k 89%
46544 Mishawaka 31,077 781 $59k $172k 100%
46614 South Bend 29,602 556 $74k $188k 100%
46628 South Bend 27,685 810 $62k $182k 100%
46545 Mishawaka 26,606 1,452 $57k $178k 100%
46619 South Bend 21,729 924 $48k $105k 100%
46637 South Bend 16,200 1,620 $72k $207k 100%
46615 South Bend 14,190 4,297 $63k $140k 100%
46561 Osceola 13,996 1,032 $92k $231k 88%
46613 South Bend 12,279 3,818 $43k $83k 100%
46617 South Bend 10,032 3,830 $74k $243k 100%
46556 Notre Dame 8,344 5,069 – – 100%
46552 New Carlisle 7,047 110 $91k $238k 76%
46635 South Bend 6,410 2,068 $82k $208k 100%
46616 South Bend 5,979 4,164 $59k $154k 100%
46601 South Bend 4,800 2,439 $31k $145k 100%
46554 North Liberty 4,405 65 $88k $203k 95%
46536 Lakeville 2,964 101 $78k $227k 91%
46624 South Bend 28 2,333 – – 100%
46595 Wyatt no residents 0 – – 100%

Partly in St. Joseph County

Residential ZIP codes mainly in another county that reach at least 1% into St. Joseph County, by their share here
In this county
46573 Wakarusa 3,936 114 $86k $241k 49%
46506 Bremen 9,994 99 $79k $243k 38%
46574 Walkerton 7,426 76 $76k $188k 30%
46550 Nappanee 12,843 179 $84k $282k 5%

Download the 30 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?

9 ZIP codes of St. Joseph County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in St. Joseph County and in the neighboring counties
ZIPIn St. JosephElsewhere
4653089%Elkhart County 11%
4656188%Elkhart County 12%
465505%Elkhart County 54%; Kosciusko County 35%; Marshall County 6%
4650638%Marshall County 62%
4657430%LaPorte County 33%; Marshall County 25%; Starke County 13%
4655276%LaPorte County 24%
4655495%LaPorte County 5%
4657349%Elkhart County 51%
4653691%Marshall County 9%

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

PO Box and single-organization ZIP codes

ZIP codes in St. Joseph County without a residential area (GeoNames postal codes)
ZIPPostal name
46546Mishawaka
46626South Bend
46634South Bend
46660South Bend
46680South Bend
46699South Bend

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do St. Joseph County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. St. Joseph County's ZIP codes use 2 prefixes: 465 and 466.

Three-digit prefixes of St. Joseph 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 St. Joseph County's
PrefixSectional centerHereAll codes
465 South Bend, IN (SCF 465) 14 52
466 South Bend, IN (SCF 465) 16 16

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