79 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Germantown | 1 | 91,164 | 89,529 | 0.35% | 5,352 | 17 | CDP |
| Silver Spring | 2 | 84,397 | 81,069 | 1.03% | 10,706 | 8 | CDP |
| Gaithersburg | 3 | 70,988 | 69,629 | 0.43% | 6,878 | 10 | City |
| Gaithersburg | 4 | 70,988 | 69,477 | 0.43% | 6,878 | 10 | City |
| Rockville | 5 | 68,687 | 67,099 | 0.39% | 5,063 | 14 | City |
| Rockville | 6 | 68,687 | 67,337 | 0.39% | 5,063 | 14 | City |
| Bethesda | 7 | 67,680 | 65,092 | 0.68% | 5,103 | 13 | CDP |
| Aspen Hill | 8 | 55,638 | 53,869 | 0.83% | 5,854 | 10 | CDP |
| Wheaton | 9 | 53,898 | 51,191 | 0.7% | 7,814 | 7 | CDP |
| North Bethesda | 10 | 51,247 | 49,719 | 0.98% | 5,771 | 9 | CDP |
| Potomac | 11 | 46,883 | 46,256 | 0.27% | 1,863 | 25 | CDP |
| Olney | 12 | 35,942 | 35,350 | 0.39% | 2,221 | 16 | CDP |
| Montgomery Village | 13 | 35,427 | 34,413 | 0.64% | 9,126 | 4 | CDP |
| Clarksburg | 14 | 31,980 | 26,234 | 3.95% | 3,314 | 10 | CDP |
| South Laurel | 15 | 29,006 | 27,593 | 0.67% | 3,593 | 8 | CDP |
| Fairland | 16 | 26,564 | 25,649 | 0.73% | 5,350 | 5 | CDP |
| North Potomac | 17 | 24,762 | 24,146 | 0.09% | 3,797 | 7 | CDP |
| Redland | 18 | 18,622 | 17,475 | 0.5% | 2,592 | 7 | CDP |
| Calverton | 19 | 18,474 | 17,034 | 0.27% | 4,037 | 5 | CDP |
| Flower Hill | 20 | 18,289 | 14,185 | 7.14% | 8,734 | 2 | CDP |
| Takoma Park | 21 | 17,916 | 17,638 | 0.34% | 8,572 | 2 | City |
| Takoma Park | 22 | 17,916 | 17,613 | 0.34% | 8,572 | 2 | City |
| Glenmont | 23 | 17,408 | 15,111 | 1.51% | 6,217 | 3 | CDP |
| Damascus | 24 | 17,243 | 17,105 | 0.77% | 1,211 | 14 | CDP |
| Cloverly | 25 | 16,764 | 15,915 | 0.66% | 1,666 | 10 | CDP |
| White Oak | 26 | 15,010 | 15,655 | -1.05% | 4,806 | 3 | CDP |
| Kemp Mill | 27 | 14,482 | 14,812 | 0.89% | 5,772 | 3 | CDP |
| Colesville | 28 | 13,468 | 14,397 | -0.58% | 2,633 | 5 | CDP |
| Burtonsville | 29 | 10,814 | 10,812 | 1.56% | 1,380 | 8 | CDP |
| Travilah | 30 | 10,518 | 11,239 | -1.03% | 660 | 16 | CDP |
| Chevy Chase | 31 | 9,850 | 9,801 | 0.2% | 4,084 | 2 | CDP |
| Leisure World | 32 | 9,032 | 9,314 | 0.21% | 8,007 | 1 | CDP |
| South Kensington | 33 | 8,348 | 8,494 | -0.1% | 3,989 | 2 | CDP |
| North Kensington | 34 | 8,213 | 8,879 | -1.05% | 5,494 | 1 | CDP |
| Four Corners | 35 | 7,721 | 8,268 | -0.19% | 5,274 | 1 | CDP |
| Forest Glen | 36 | 6,928 | 5,957 | 0.33% | 6,907 | 1 | CDP |
| Darnestown | 37 | 6,640 | 6,754 | -0.15% | 405 | 16 | CDP |
| Poolesville | 38 | 5,886 | 5,739 | 0.51% | 1,497 | 4 | Town |
| Poolesville | 39 | 5,886 | 5,734 | 0.51% | 1,497 | 4 | Town |
| Burnt Mills | 40 | 5,531 | 4,083 | 7.15% | 6,624 | 1 | CDP |
| Layhill | 41 | 5,154 | 5,112 | -0.02% | 3,244 | 2 | CDP |
| West Laurel | 42 | 4,358 | 4,171 | 0.21% | 1,927 | 2 | CDP |
| Friendship Heights Village | 43 | 4,219 | 4,577 | -0.75% | 71,508 | 0 | CDP |
| Brookmont | 44 | 3,798 | 3,925 | 0.58% | 2,897 | 1 | CDP |
| Konterra | 45 | 3,248 | 2,368 | 1.5% | 535 | 6 | CDP |
| Chevy Chase | 46 | 2,935 | 2,902 | 0.27% | 6,312 | 0 | Town |
| Chevy Chase | 47 | 2,935 | 2,895 | 0.27% | 6,312 | 0 | Town |
| Cabin John | 48 | 2,175 | 2,276 | -0.32% | 1,783 | 1 | CDP |
| Kensington | 49 | 2,161 | 2,131 | 0.28% | 4,296 | 1 | Town |
| Kensington | 50 | 2,161 | 2,128 | 0.28% | 4,296 | 1 | Town |
| Chevy Chase Village | 51 | 2,076 | 2,053 | 0.24% | 4,943 | 0 | Town |
| Chevy Chase Village | 52 | 2,076 | 2,048 | 0.24% | 4,943 | 0 | Town |
| Derwood | 53 | 1,717 | 1,644 | -2.55% | 2,738 | 1 | CDP |
| Ten Mile Creek | 54 | 1,445 | 1,074 | 7.12% | 249 | 6 | CDP |
| Somerset | 55 | 1,207 | 1,187 | 0.33% | 4,373 | 0 | Town |
| Somerset | 56 | 1,207 | 1,184 | 0.33% | 4,373 | 0 | Town |
| Spencerville | 57 | 1,198 | 1,653 | -2.12% | 767 | 2 | CDP |
| Chevy Chase View | 58 | 1,020 | 1,005 | 0.29% | 3,806 | 0 | Town |
| Chevy Chase View | 59 | 1,020 | 1,003 | 0.29% | 3,806 | 0 | Town |
| Garrett Park | 60 | 1,007 | 993 | 0.3% | 4,012 | 0 | Town |
| Garrett Park | 61 | 1,007 | 991 | 0.3% | 4,012 | 0 | Town |
| Martin's Additions | 62 | 952 | 942 | 0.21% | 6,899 | 0 | Village |
| Martin's Additions | 63 | 952 | 940 | 0.21% | 6,899 | 0 | Village |
| Chevy Chase Section Three | 64 | 804 | 795 | 0.25% | 6,872 | 0 | Village |
| Chevy Chase Section Three | 65 | 804 | 793 | 0.25% | 6,872 | 0 | Village |
| North Chevy Chase | 66 | 693 | 682 | 0.29% | 5,974 | 0 | Village |
| North Chevy Chase | 67 | 693 | 680 | 0.29% | 5,974 | 0 | Village |
| Chevy Chase Section Five | 68 | 686 | 678 | 0.29% | 6,411 | 0 | Village |
| Chevy Chase Section Five | 69 | 686 | 676 | 0.29% | 6,411 | 0 | Village |
| Laytonsville | 70 | 588 | 578 | 0.34% | 562 | 1 | Town |
| Laytonsville | 71 | 588 | 577 | 0.34% | 562 | 1 | Town |
| Washington Grove | 72 | 514 | 505 | 0.39% | 1,530 | 0 | Town |
| Washington Grove | 73 | 514 | 504 | 0.39% | 1,530 | 0 | Town |
| Glen Echo | 74 | 286 | 282 | 0.35% | 2,777 | 0 | Town |
| Glen Echo | 75 | 286 | 281 | 0.35% | 2,777 | 0 | Town |
| Brookeville | 76 | 169 | 164 | 0.6% | 1,207 | 0 | Town |
| Brookeville | 77 | 169 | 164 | 0.6% | 1,207 | 0 | Town |
| Barnesville | 78 | 145 | 144 | 0% | 297 | 0 | Town |
| Barnesville | 79 | 145 | 144 | 0% | 297 | 0 | Town |
Germantown is the largest city in Montgomery County, with a population of 91,164.
Barnesville is the smallest city in Montgomery County, with a population of 145.
There are 79 cities in Montgomery County, Maryland.