| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Galbraith | city | Iowa | United States | 42.98 | -94.16 | 1135 | |
| Galesburg | city | Iowa | United States | 41.56 | -92.95 | 866 | |
| Galland | city | Iowa | United States | 40.50 | -91.37 | 830 | |
| Galt | city | Iowa | United States | 42.69 | -93.61 | 1210 | |
| Galva | city | Iowa | United States | 42.51 | -95.42 | 1669 | |
| Gambrill (historical) | city | Iowa | United States | 41.75 | -90.54 | 830 | |
| Garber | city | Iowa | United States | 42.74 | -91.26 | 830 | |
| Garden City | city | Iowa | United States | 42.25 | -93.40 | 1194 | |
| Garden Grove | city | Iowa | United States | 40.83 | -93.61 | 1049 | |
| Gardiner | city | Iowa | United States | 41.82 | -94.03 | 951 | |
| Gardner | city | Iowa | United States | 41.67 | -94.76 | 1669 | |
| Garfield | city | Iowa | United States | 40.77 | -93.00 | 1010 | |
| Garland | city | Iowa | United States | 41.06 | -91.22 | 830 | |
| Garnavillo | city | Iowa | United States | 42.87 | -91.24 | 1049 | |
| Garner | city | Iowa | United States | 43.10 | -93.60 | 1210 | |
| Garretville | city | Iowa | United States | 41.52 | -94.08 | 1076 | |
| Garrison | city | Iowa | United States | 42.14 | -92.14 | 882 | |
| Garry Owen | city | Iowa | United States | 42.28 | -90.83 | 1017 | |
| Garwin | city | Iowa | United States | 42.09 | -92.68 | 951 | |
| Gas Light Mobile Home Villa | city | Iowa | United States | 42.54 | -92.42 | 853 | |
| Gaslight Square Trailer Park | city | Iowa | United States | 41.40 | -91.07 | 830 | |
| Gatesville | city | Iowa | United States | 42.44 | -91.83 | 931 | |
| Gaza | city | Iowa | United States | 43.02 | -95.58 | 1669 | |
| Geneva | city | Iowa | United States | 42.68 | -93.13 | 1099 | |
| Geneva | city | Iowa | United States | 42.12 | -92.12 | 997 | |
| Genoa | city | Iowa | United States | 40.60 | -93.11 | 1062 | |
| Genoa Bluff | city | Iowa | United States | 41.70 | -92.15 | 830 | |
| George | city | Iowa | United States | 43.34 | -96.00 | 1669 | |
| Georgetown | city | Iowa | United States | 41.01 | -92.96 | 958 | |
| Gerled | city | Iowa | United States | 43.38 | -94.19 | 1148 | |
| German Valley | city | Iowa | United States | 43.27 | -94.03 | 1184 | |
| Germantown | city | Iowa | United States | 42.95 | -95.78 | 1669 | |
| Germanville | city | Iowa | United States | 41.10 | -91.77 | 830 | |
| Giard | city | Iowa | United States | 43.01 | -91.29 | 1108 | |
| Giard Station (historical) | city | Iowa | United States | 43.03 | -91.27 | 1095 | |
| Gibbsville | city | Iowa | United States | 41.80 | -93.82 | 971 | |
| Gibson | city | Iowa | United States | 41.48 | -92.39 | 951 | |
| Gifford | city | Iowa | United States | 42.29 | -93.09 | 941 | |
| Gilbert | city | Iowa | United States | 42.11 | -93.65 | 974 | |
| Gilbertville | city | Iowa | United States | 42.42 | -92.21 | 830 | |
| Gilead | city | Iowa | United States | 41.17 | -94.59 | 1669 | |
| Gillett Grove | city | Iowa | United States | 43.02 | -95.04 | 1669 | |
| Gilliatt | city | Iowa | United States | 41.29 | -95.76 | 1072 | |
| Gilman | city | Iowa | United States | 41.88 | -92.79 | 1020 | |
| Gilmore City | city | Iowa | United States | 42.73 | -94.45 | 1210 | |
| Gilt Edge | city | Iowa | United States | 42.44 | -91.20 | 944 | |
| Givin | city | Iowa | United States | 41.23 | -92.66 | 830 | |
| Gladbrook | city | Iowa | United States | 42.19 | -92.72 | 958 | |
| Glade | city | Iowa | United States | 43.34 | -93.16 | 1171 | |
| Gladstone | city | Iowa | United States | 41.96 | -92.50 | 839 | |
| Gladwin | city | Iowa | United States | 41.36 | -91.45 | 830 | |
| Glasgow | city | Iowa | United States | 40.94 | -91.78 | 830 | |
| Glasgow (historical) | city | Iowa | United States | 42.60 | -92.35 | 961 | |
| Glen Ellen | city | Iowa | United States | 42.42 | -96.32 | 1089 | |
| Glendale Mobile Home Park | city | Iowa | United States | 41.53 | -90.48 | 830 | |
| Glendon | city | Iowa | United States | 41.59 | -94.40 | 1036 | |
| Glenwood | city | Iowa | United States | 41.05 | -95.74 | 1013 | |
| Glidden | city | Iowa | United States | 42.06 | -94.73 | 1223 | |
| Goddard | city | Iowa | United States | 41.72 | -93.19 | 830 | |
| Golden | city | Iowa | United States | 42.39 | -91.47 | 1049 | |
| Golden Arrow Mobile Park | city | Iowa | United States | 40.99 | -92.40 | 830 | |
| Golden Spike Mobile Home Park | city | Iowa | United States | 41.25 | -95.87 | 977 | |
| Goldfield | city | Iowa | United States | 42.74 | -93.92 | 1167 | |
| Golf View Mobile Home Court | city | Iowa | United States | 41.75 | -91.62 | 830 | |
| Goodell | city | Iowa | United States | 42.92 | -93.62 | 1249 | |
| Goose Lake | city | Iowa | United States | 41.97 | -90.38 | 830 | |
| Gosport | city | Iowa | United States | 41.20 | -93.15 | 898 | |
| Gowrie | city | Iowa | United States | 42.28 | -94.29 | 1148 | |
| Grable | city | Iowa | United States | 41.47 | -95.90 | 987 | |
| Grace Hill | city | Iowa | United States | 41.26 | -91.83 | 830 | |
| Graettinger | city | Iowa | United States | 43.24 | -94.75 | 1230 | |
| Graf | city | Iowa | United States | 42.49 | -90.87 | 830 | |
| Grafton | city | Iowa | United States | 43.33 | -93.07 | 1217 | |
| Graham (historical) | city | Iowa | United States | 41.68 | -91.46 | 830 | |
| Granada Mobile Home Park | city | Iowa | United States | 42.57 | -90.72 | 830 | |
| Grand Junction | city | Iowa | United States | 42.03 | -94.24 | 1033 | |
| Grand Mound | city | Iowa | United States | 41.82 | -90.65 | 830 | |
| Grand River | city | Iowa | United States | 40.82 | -93.96 | 1000 | |
| Grand View Village | city | Iowa | United States | 41.95 | -91.74 | 849 | |
| Grandview | city | Iowa | United States | 41.28 | -91.19 | 830 | |
| Grandview Village Mobile Home Park | city | Iowa | United States | 41.63 | -93.55 | 830 | |
| Granger | city | Iowa | United States | 41.76 | -93.82 | 872 | |
| Granger Homesteads | city | Iowa | United States | 41.76 | -93.84 | 879 | |
| Granite | city | Iowa | United States | 43.47 | -96.56 | 1669 | |
| Grant | city | Iowa | United States | 41.14 | -94.98 | 1076 | |
| Grant City | city | Iowa | United States | 42.27 | -94.89 | 1131 | |
| Granville | city | Iowa | United States | 42.99 | -95.87 | 1669 | |
| Granville (historical) | city | Iowa | United States | 41.50 | -92.77 | 849 | |
| Gravel Pit | city | Iowa | United States | 42.07 | -94.29 | 1023 | |
| Gravity | city | Iowa | United States | 40.76 | -94.74 | 1161 | |
| Gray | city | Iowa | United States | 41.84 | -94.98 | 1669 | |
| Great Oaks | city | Iowa | United States | 41.59 | -90.42 | 830 | |
| Greeley | city | Iowa | United States | 42.59 | -91.34 | 1118 | |
| Green Acres | city | Iowa | United States | 41.57 | -90.61 | 830 | |
| Green Acres Mobile Home Park | city | Iowa | United States | 40.85 | -91.11 | 830 | |
| Green Bay (historical) | city | Iowa | United States | 40.92 | -93.77 | 1161 | |
| Green Brier | city | Iowa | United States | 41.92 | -94.42 | 1079 | |
| Green Castle | city | Iowa | United States | 41.75 | -93.26 | 898 | |
| Green Castle (historical) | city | Iowa | United States | 41.77 | -91.67 | 830 | |
| Green Center | city | Iowa | United States | 41.54 | -91.89 | 830 | |
| Green Island | city | Iowa | United States | 42.15 | -90.32 | 830 | |
| Green Meadows Mobile Home Park | city | Iowa | United States | 43.12 | -93.39 | 1246 | |
| Green Mountain | city | Iowa | United States | 42.10 | -92.82 | 951 | |
| Green Valley Mobile Home Court | city | Iowa | United States | 40.94 | -91.57 | 830 | |
| Greenbush | city | Iowa | United States | 41.42 | -93.45 | 905 | |
| Greenbush | city | Iowa | United States | 41.42 | -93.66 | 925 | |
| Greene | city | Iowa | United States | 42.90 | -92.80 | 941 | |
| Greenfield | city | Iowa | United States | 41.31 | -94.46 | 1669 | |
| Greenfield Park Mobile Home Court | city | Iowa | United States | 43.07 | -92.67 | 1000 | |
| Greenville | city | Iowa | United States | 43.02 | -95.15 | 1669 | |
| Gridley | city | Iowa | United States | 43.40 | -94.57 | 1243 | |
| Griffen | city | Iowa | United States | 42.19 | -93.79 | 1007 | |
| Grimes | city | Iowa | United States | 41.69 | -93.79 | 951 | |
| Grinnell | city | Iowa | United States | 41.74 | -92.72 | 1023 | |
| Griswold | city | Iowa | United States | 41.23 | -95.14 | 1105 | |
| Grove City (historical) | city | Iowa | United States | 41.39 | -94.96 | 1200 | |
| Groveland (historical) | city | Iowa | United States | 40.98 | -93.80 | 1200 | |
| Grundy Center | city | Iowa | United States | 42.36 | -92.77 | 1000 | |
| Gruver | city | Iowa | United States | 43.39 | -94.71 | 1669 | |
| Guernsey | city | Iowa | United States | 41.65 | -92.34 | 830 | |
| Gunder | city | Iowa | United States | 42.97 | -91.51 | 1049 | |
| Guss | city | Iowa | United States | 40.84 | -94.86 | 1249 | |
| Guthrie Center | city | Iowa | United States | 41.68 | -94.50 | 1118 | |
| Guttenberg | city | Iowa | United States | 42.79 | -91.10 | 830 |