First three digits · Michigan
ZIP Codes Starting with
62 ZIP codes start with 492, sorted at the Detroit, MI (SCF 481) sectional center (USPS labeling list L005, effective October 1, 2026) in Michigan: 58 residential ZIP codes across 7 counties and 4 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 492 mean?
The first digit, 4, is one of ten national areas (Indiana, Kentucky, Michigan and Ohio). The first three, 492, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 492 to the Detroit, MI (SCF 481) facility. The last two digits pick the delivery area. By residents, the largest town names among the 492 ZIP codes are Jackson, Adrian, Hillsdale, Tecumseh, Albion and Brooklyn.
The same facility sorts 3 prefixes, 201 ZIP codes in all: 481, 482, 492.
Where are the 492 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 492
| County | ||||||
|---|---|---|---|---|---|---|
| 49201 | Jackson | Jackson County | 49,107 | 317 | $75k | $216k |
| 49202 | Jackson | Jackson County | 18,519 | 1,457 | $43k | $116k |
| 49203 | Jackson | Jackson County | 36,474 | 1,378 | $56k | $159k |
| 49204 | Jackson | Jackson County | PO Box or unique | – | – | – |
| 49220 | Addison | Lenawee County | 2,439 | 76 | $73k | $225k |
| 49221 | Adrian | Lenawee County | 41,087 | 343 | $66k | $170k |
| 49224 | Albion | Calhoun County | 13,447 | 135 | $53k | $137k |
| 49227 | Allen | Hillsdale County | 1,287 | 50 | $54k | $159k |
| 49228 | Blissfield | Lenawee County | 5,467 | 70 | $83k | $197k |
| 49229 | Britton | Lenawee County | 3,540 | 63 | $95k | $227k |
| 49230 | Brooklyn | Jackson County | 10,077 | 157 | $84k | $270k |
| 49232 | Camden | Hillsdale County | 2,790 | 44 | $56k | $211k |
| 49233 | Cement City | Jackson County | 2,938 | 138 | $81k | $230k |
| 49234 | Clarklake | Jackson County | 2,520 | 118 | $110k | $295k |
| 49235 | Clayton | Lenawee County | 2,115 | 43 | $64k | $174k |
| 49236 | Clinton | Lenawee County | 5,026 | 134 | $80k | $230k |
| 49237 | Concord | Jackson County | 3,097 | 76 | $67k | $186k |
| 49238 | Deerfield | Lenawee County | 1,914 | 64 | $75k | $208k |
| 49239 | Frontier | Hillsdale County | PO Box or unique | – | – | – |
| 49240 | Grass Lake | Jackson County | 8,863 | 85 | $100k | $299k |
| 49241 | Hanover | Jackson County | 2,279 | 71 | $82k | $223k |
| 49242 | Hillsdale | Hillsdale County | 14,750 | 163 | $61k | $184k |
| 49245 | Homer | Calhoun County | 4,547 | 49 | $62k | $153k |
| 49246 | Horton | Jackson County | 3,382 | 98 | $82k | $254k |
| 49247 | Hudson | Lenawee County | 5,205 | 62 | $60k | $150k |
| 49248 | Jasper | Lenawee County | 787 | 24 | $81k | $158k |
| 49249 | Jerome | Hillsdale County | 3,462 | 118 | $82k | $224k |
| 49250 | Jonesville | Hillsdale County | 5,653 | 72 | $66k | $170k |
| 49251 | Leslie | Ingham County | 5,958 | 102 | $85k | $206k |
| 49252 | Litchfield | Hillsdale County | 2,556 | 60 | $56k | $145k |
| 49253 | Manitou Beach | Lenawee County | 3,009 | 127 | $89k | $255k |
| 49254 | Michigan Center | Jackson County | 3,484 | 1,328 | $64k | $172k |
| 49255 | Montgomery | Branch County | 2,072 | 52 | $51k | $141k |
| 49256 | Morenci | Lenawee County | 3,797 | 63 | $63k | $129k |
| 49257 | Moscow | Hillsdale County | PO Box or unique | – | – | – |
| 49258 | Mosherville | Hillsdale County | 29 | 1,933 | – | – |
| 49259 | Munith | Jackson County | 2,653 | 91 | $67k | $208k |
| 49261 | Napoleon | Jackson County | 199 | 273 | $92k | $209k |
| 49262 | North Adams | Hillsdale County | 1,258 | 55 | $54k | $145k |
| 49263 | Norvell | Jackson County | no residents | 0 | – | – |
| 49264 | Onondaga | Ingham County | 1,454 | 54 | $92k | $236k |
| 49265 | Onsted | Lenawee County | 5,157 | 159 | $78k | $275k |
| 49266 | Osseo | Hillsdale County | 2,982 | 66 | $66k | $171k |
| 49267 | Ottawa Lake | Monroe County | 3,974 | 102 | $98k | $268k |
| 49268 | Palmyra | Lenawee County | 1,108 | 48 | $81k | $165k |
| 49269 | Parma | Jackson County | 5,544 | 99 | $87k | $217k |
| 49270 | Petersburg | Monroe County | 5,567 | 124 | $95k | $298k |
| 49271 | Pittsford | Hillsdale County | 2,280 | 43 | $56k | $147k |
| 49272 | Pleasant Lake | Jackson County | 2,883 | 259 | $84k | $233k |
| 49274 | Reading | Hillsdale County | 3,679 | 60 | $58k | $171k |
| 49276 | Riga | Lenawee County | 703 | 31 | $74k | $193k |
| 49277 | Rives Junction | Jackson County | 2,924 | 89 | $92k | $218k |
| 49279 | Sand Creek | Lenawee County | 965 | 37 | $71k | $163k |
| 49281 | Somerset | Hillsdale County | PO Box or unique | – | – | – |
| 49282 | Somerset Center | Hillsdale County | 82 | 32 | $35k | – |
| 49283 | Spring Arbor | Jackson County | 5,039 | 348 | $109k | $218k |
| 49284 | Springport | Jackson County | 2,493 | 47 | $58k | $153k |
| 49285 | Stockbridge | Ingham County | 6,240 | 82 | $73k | $210k |
| 49286 | Tecumseh | Lenawee County | 14,128 | 243 | $72k | $239k |
| 49287 | Tipton | Lenawee County | 1,958 | 70 | $88k | $263k |
| 49288 | Waldron | Hillsdale County | 1,483 | 39 | $67k | $148k |
| 49289 | Weston | Lenawee County | 129 | 547 | – | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.