Addresses on 21st St in Allegan Michigan
- 1491 21st St
- 1496 21st St
- 1496 21st St
- 1501 21st St
- 1507 21st St
- 1508 21st St
- 1509 21st St
- 1511 21st St
- 1518 21st St
- 1546 21st St
- 1546 21st St
- 1552 21st St
- 1566 21st St
- 1572 21st St
- 1584 21st St
- 1615 21st St
- 1625 21st St
- 1635 21st St
- 1645 21st St
- 1665 21st St
- 1820 21st St
- 1852 21st St
- 1853 21st St
- 1865 21st St
- 1874 21st St
- 1875 21st St
- 1885 21st St
- 1886 21st St
- 1893 21st St
- 1909 21st St
- 1924 21st St
- 1991 21st St
- 1991 21st St
- 21st St