First three digits · Indiana
ZIP Codes Starting with
53 ZIP codes start with 463, sorted at the Gary, IN (SCF 463) sectional center (USPS labeling list L005, effective October 1, 2026) in Indiana: 45 residential ZIP codes across 6 counties and 8 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 463 mean?
The first digit, 4, is one of ten national areas (Indiana, Kentucky, Michigan and Ohio). The first three, 463, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 463 to the Gary, IN (SCF 463) facility. The last two digits pick the delivery area. By residents, the largest town names among the 463 ZIP codes are Valparaiso, Crown Point, Hammond, La Porte, Michigan City and Portage.
The same facility sorts 2 prefixes, 64 ZIP codes in all: 463, 464.
Where are the 463 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 463
| County | ||||||
|---|---|---|---|---|---|---|
| 46301 | Beverly Shores | Porter County | 650 | 148 | $120k | $607k |
| 46302 | Boone Grove | Porter County | 29 | 16 | $57k | $305k |
| 46303 | Cedar Lake | Lake County | 17,680 | 616 | $84k | $294k |
| 46304 | Chesterton | Porter County | 28,307 | 490 | $91k | $293k |
| 46307 | Crown Point | Lake County | 71,673 | 822 | $108k | $324k |
| 46308 | Crown Point | Lake County | PO Box or unique | – | – | – |
| 46310 | Demotte | Jasper County | 14,077 | 222 | $74k | $235k |
| 46311 | Dyer | Lake County | 23,321 | 1,851 | $117k | $332k |
| 46312 | East Chicago | Lake County | 26,022 | 1,844 | $42k | $105k |
| 46319 | Griffith | Lake County | 17,847 | 1,863 | $75k | $203k |
| 46320 | Hammond | Lake County | 14,353 | 3,082 | $37k | $135k |
| 46321 | Munster | Lake County | 23,733 | 3,125 | $110k | $334k |
| 46322 | Highland | Lake County | 23,680 | 3,434 | $78k | $233k |
| 46323 | Hammond | Lake County | 23,047 | 3,717 | $60k | $166k |
| 46324 | Hammond | Lake County | 21,409 | 4,910 | $63k | $159k |
| 46325 | Hammond | Lake County | PO Box or unique | – | – | – |
| 46327 | Hammond | Lake County | 10,597 | 2,303 | $47k | $142k |
| 46340 | Hanna | LaPorte County | 1,524 | 46 | $59k | $172k |
| 46341 | Hebron | Porter County | 10,048 | 105 | $90k | $269k |
| 46342 | Hobart | Lake County | 32,224 | 920 | $76k | $213k |
| 46345 | Kingsbury | LaPorte County | 66 | 680 | – | $186k |
| 46346 | Kingsford Heights | LaPorte County | 1,358 | 1,585 | $58k | $121k |
| 46347 | Kouts | Porter County | 4,951 | 69 | $95k | $255k |
| 46348 | La Crosse | LaPorte County | 1,217 | 24 | $64k | $169k |
| 46349 | Lake Village | Newton County | 3,416 | 43 | $82k | $257k |
| 46350 | La Porte | LaPorte County | 44,763 | 231 | $74k | $213k |
| 46352 | La Porte | LaPorte County | PO Box or unique | – | – | – |
| 46355 | Leroy | Lake County | PO Box or unique | – | – | – |
| 46356 | Lowell | Lake County | 19,721 | 175 | $89k | $282k |
| 46360 | Michigan City | LaPorte County | 43,817 | 572 | $59k | $167k |
| 46361 | Michigan City | LaPorte County | PO Box or unique | – | – | – |
| 46365 | Mill Creek | LaPorte County | 992 | 44 | $98k | $217k |
| 46366 | North Judson | Starke County | 5,601 | 70 | $60k | $137k |
| 46368 | Portage | Porter County | 40,301 | 1,589 | $76k | $227k |
| 46371 | Rolling Prairie | LaPorte County | 3,396 | 90 | $100k | $256k |
| 46372 | Roselawn | Newton County | PO Box or unique | – | – | – |
| 46373 | Saint John | Lake County | 18,843 | 1,732 | $127k | $409k |
| 46374 | San Pierre | Starke County | 1,290 | 37 | $91k | $227k |
| 46375 | Schererville | Lake County | 24,188 | 1,896 | $93k | $315k |
| 46376 | Schneider | Lake County | 319 | 36 | $64k | $188k |
| 46377 | Shelby | Lake County | 45 | 217 | $39k | – |
| 46379 | Sumava Resorts | Newton County | 234 | 76 | – | $161k |
| 46380 | Tefft | Jasper County | PO Box or unique | – | – | – |
| 46381 | Thayer | Newton County | 212 | 99 | $65k | – |
| 46382 | Union Mills | LaPorte County | 1,835 | 37 | $95k | $214k |
| 46383 | Valparaiso | Porter County | 42,183 | 482 | $76k | $280k |
| 46384 | Valparaiso | Porter County | PO Box or unique | – | – | – |
| 46385 | Valparaiso | Porter County | 40,856 | 506 | $99k | $332k |
| 46390 | Wanatah | LaPorte County | 2,554 | 52 | $88k | $228k |
| 46391 | Westville | LaPorte County | 8,986 | 226 | $83k | $254k |
| 46392 | Wheatfield | Jasper County | 8,302 | 77 | $91k | $234k |
| 46393 | Wheeler | Porter County | 216 | 126 | $56k | $144k |
| 46394 | Whiting | Lake County | 11,894 | 2,502 | $66k | $173k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.