St. Petersburg, Florida Population 2018
St. Petersburg, Florida's estimated population is 263,255 according to the most recent United States census estimates. St. Petersburg, Florida is the 5th largest city in Florida based on official 2017 estimates from the US Census Bureau.
The population density is 4261.70 people/mi² (1645.44 people/km²), with a household density of 808.40 people/km² (2093.75 people/mi²).
The overall median age is 42.4 years, 41 years for males, and 43.7 years for females. For every 100 females there are 92.9 males.
Based on data from the American Community Survey, in 2017 there were 129,336 households in the city, with an average size of 2.32 people per household. The vacancy rate was 17.6%, with a median rent of $959/month. The median house has 4.8 rooms, and has a value of $154,800.
The median income for households in St. Petersburg, Florida is $48,183, while the mean household income is $67,726. The per capita income is $30,206, and 11.2% of families and 16.4% of individuals are below the federal poverty line. 26% of those under 18 are in poverty, and 10.5% of those 65 years or older.
| Year | Population | Growth | Growth Rate |
| 2017 | 263,255 | 3,336 | 1.28% |
| 2016 | 259,919 | 4,251 | 1.66% |
| 2015 | 255,668 | 3,033 | 1.20% |
| 2014 | 252,635 | 3,974 | 1.60% |
| 2013 | 248,661 | 1,879 | 0.76% |
| 2012 | 246,782 | 905 | 0.37% |
| 2011 | 245,877 | 661 | 0.27% |
| 2010 | 245,216 | -3,016 | -1.21% |
| 2000 | 248,232 | 9,603 | 4.02% |
| 1990 | 238,629 | -18 | -0.01% |
| 1980 | 238,647 | 22,488 | 10.40% |
| 1970 | 216,159 | 34,861 | 19.23% |
| 1960 | 181,298 | 84,560 | 87.41% |
| 1950 | 96,738 | 35,926 | 59.08% |
| 1940 | 60,812 | 20,387 | 50.43% |
| 1930 | 40,425 | 26,188 | 183.94% |
| 1920 | 14,237 | 10,110 | 244.97% |
| 1910 | 4,127 | 2,527 | 157.94% |
| 1900 | 1,600 | 1,300 | 433.33% |
| 1890 | 300 | 0.00% |
