Addresses on 18th St in Watertown South Dakota
- 1000 18th Ave
- 1006 18th St
- 1006 18th Ave
- 1007 18th Ave
- 101 18th St
- 1012 18th St
- 1014 18th St
- 1017 18th St
- 102 18th Ave
- 102 18th St
- 1023 18th St
- 1029 18th St
- 107 18th St
- 107 18th Ave
- 108 18th St
- 109 18th St
- 109 18th St
- 110 18th St
- 1104 18th St
- 1105 18th St
- 1106 18th St
- 111 18th Ave
- 111 18th St
- 1111 18th St
- 1112 18th St
- 1117 18th St
- 1118 18th St
- 112 18th Ave
- 112 18th St
- 1123 18th St
- 1124 18th St
- 1127 18th St
- 113 18th St
- 113 18th St
- 114 18th St
- 114 18th St
- 115 18th St
- 118 18th St
- 118 18th St
- 118 18th St
- 119 18th St
- 12 18th St
- 121 18th Ave
- 125 18th St
- 128 18th St
- 13 18th St
- 131 18th St
- 131 18th Ave
- 132 18th Ave
- 139 18th St
- 141 18th Ave
- 142 18th Ave
- 147 18th St
- 147 18th Ave
- 148 18th St
- 151 18th Ave
- 152 18th Ave
- 155 18th St
- 16 18th St
- 16 18th St
- 162 18th Ave
- 164 18th St
- 17 18th St
- 173 18th St
- 174 18th St
- 179 18th St
- 180 18th St
- 20 18th St
- 20 18th Ave
- 200 18th St
- 203 18th St
- 205 18th St
- 206 18th St
- 207 18th St
- 207 18th St
- 208 18th St
- 21 18th Ave
- 21 18th St
- 210 18th St
- 211 18th St
- 211 18th St
- 218 18th St
- 219 18th St
- 23 18th Ave
- 24 18th St
- 25 18th Ave
- 25 18th St
- 27 18th Ave
- 29 18th Ave
- 302 18th St
- 303 18th St
- 305 18th St
- 305 18th St
- 305 18th St
- 305 18th St
- 305 18th St
- 305 18th St
- 305 18th St
- 305 18th St
- 305 18th St