| Population | 2,850 |
| Nationwide Rank | 6375 |
Thermopolis, Wyoming is the 6,375th largest city in the United States as of 2018.
Thermopolis, Wyoming is a town.
Thermopolis, Wyoming is currently 13.5% smaller than it was in 1990, the year of its peak recorded population.
Thermopolis, Wyoming's growth is extremely below average. 85% of similarly sized cities are growing faster since 2000.
| US Rank | Name | Population | Growth 2000-2018 |
|---|---|---|---|
| 6365 | Clayton, Alabama | 2,856 | 94.2% |
| 6366 | Homer, Louisiana | 2,856 | -24.1% |
| 6367 | Akron, New York | 2,855 | -7.4% |
| 6368 | David City, Nebraska | 2,855 | 9.3% |
| 6369 | Mount Morris, Michigan | 2,855 | -10.7% |
| 6370 | Mountville, Pennsylvania | 2,855 | 16.3% |
| 6371 | Andrews, South Carolina | 2,852 | -7.0% |
| 6372 | Winner, South Dakota | 2,852 | -8.5% |
| 6373 | Buckeye Lake, Ohio | 2,851 | -6.7% |
| 6374 | Filer, Idaho | 2,851 | 59.8% |
| 6375 | Thermopolis, Wyoming | 2,850 | -9.8% |
| 6376 | Woodbury, Tennessee | 2,850 | 16.8% |
| 6377 | Kewaunee, Wisconsin | 2,848 | 1.4% |
| 6378 | Horace, North Dakota | 2,847 | 53.7% |
| 6379 | Riverview, Missouri | 2,847 | -9.1% |
| 6380 | Village of Grosse Pointe Shores, Michigan | 2,847 | |
| 6381 | West Grove, Pennsylvania | 2,847 | 7.2% |
| 6382 | Florida, New York | 2,846 | 9.4% |
| 6383 | Seagraves, Texas | 2,846 | 22.3% |
| 6384 | Mountain Iron, Minnesota | 2,845 | -5.6% |
| 6385 | Valley, Nebraska | 2,845 | 58.4% |
| US Rank | Name | Population | Growth 2000-2018 |
|---|---|---|---|
| 4690 | Worland | 5,075 | -4.3% |
| 4988 | Buffalo | 4,573 | 16.5% |
| 5451 | Mills | 3,915 | 23.1% |
| 5717 | Wheatland | 3,553 | 0.8% |
| 5841 | Newcastle | 3,402 | 4.2% |
| 6293 | Evansville | 2,934 | 29.8% |
| 6375 | Thermopolis | 2,850 | -9.8% |
| 6469 | Bar Nunn | 2,761 | 194.6% |
| 6515 | Kemmerer | 2,734 | 3.3% |
| 6731 | Glenrock | 2,554 | 13.4% |
| 6965 | Lovell | 2,386 | 1.3% |
| 7492 | Lyman | 2,065 | 6.8% |
| 7595 | Afton | 2,006 | 8.2% |
| 7836 | Pinedale | 1,878 | 33.2% |
| 7890 | Greybull | 1,856 | 2.7% |
| 8156 | Wright | 1,733 | 27.7% |
| 8403 | Saratoga | 1,623 | -5.6% |
| 8468 | Star Valley Ranch | 1,597 | 145.3% |
| 8600 | Lusk | 1,541 | 7.1% |
| Year | Population | Rank in US |
|---|---|---|
| 2018 | 2,850 | 6,375 |
| 2017 | 2,930 | 6,291 |
| 2016 | 2,937 | 6,283 |
| 2015 | 2,974 | 6,221 |
| 2014 | 3,020 | 6,170 |
| 2013 | 3,038 | 6,145 |
| 2012 | 3,019 | 6,143 |
| 2011 | 3,009 | 6,147 |
| 2010 | 3,009 | 6,128 |
| 2009 | 2,948 | 6,112 |
| 2008 | 2,901 | 6,147 |
| 2007 | 2,888 | 6,146 |
| 2006 | 2,888 | 6,117 |
| 2005 | 2,884 | 6,093 |
| 2004 | 2,926 | 6,028 |
| 2003 | 2,959 | 5,979 |
| 2002 | 3,052 | 5,861 |
| 2001 | 3,085 | 5,803 |
| 2000 | 3,160 | 5,714 |
| 1990 | 3,293 | 5,246 |