The term specific gravity, symbolized sp gr, refers to the ratio of the density of a solid or liquid to the density of water at 4 degrees Celsius. The term can also refer to the ratio of the density of a gas to the density of dry air at standard temperature and pressure, although this specification is less often used.
Households in Columbia, MD have a median annual income of $100,849, which is more than the median annual income in the United States. Look at the chart to see how the median household income in Columbia, MD compares to that in it's parent locations. Dataset: Source:
Richmond median household income is $5,380 lower than the median Virginia household income and $5,036 greater than the US median household income. 2014 metro income data (including Richmond median household income) will be released in September of 2015.Median family and per capita income for Richmond are shown below.eal median household income peaked in 2007 at $63,745 and is now $6,459 (10.13%) lower. From a post peak low of $56,755 in 2011, real median household income for Richmond has now grown by $531 (0.94%).