Dildomania.com recently compiled a state-by-state ranking of vagina size. Massachusetts was the largest by far. Followed by Rhode Island then South Dakota, D.C. then North Dakota. The states with the smallest are Mississippi, Hawaii, Arkansas, Wyoming and North Carolina.
This survey was based on the website's sales of large-sized dildos along with customer research that includes the self-reported measurements of over 71,000 women using Dildomania.com’s "Accufit™" measuring system. Customers measure the length and depth of their vagina, then match these results with one of the 83 custom dildo sizes.
These range in length from 5 to 14 inches and from “super slim” to “extra roomy," says Greg Torleson, Dildomania.com’s Directory of Technology.
While this customer research may be reasonably accurate, most are skeptical of any system of vaginal measurement that relies so strongly on self reporting. Also, the women who seek out custom dildos are probably more likely to have a vagina that can’t be accommodated by dildos widely available for retail sale. This means that a disproportionately large amount of oversized vaginas would be reported. However, Mississippi Institute of Biology director, Samantha Goldstein has given credence to the legitimacy of these findings by stating “Dildomania’s findings are correlative with our own findings save for a few exceptions”