Home prices throughout Connecticut rose for the 12th consecutive month in September, according to figures released today by a leading real estate publisher.

The Warren Group, publisher of the Boston-based Commercial Record, said single-family home sales statewide rose more than 20 percent in September compared with a year ago. The median sale price also rose $20,000 to $250,000, according to the latest figures.

“This was the best September in terms of single-family sales volume since 2007,” said Timothy M. Warren Jr., chief executive of The Warren Group.

Locally, sales increased by more than 16 percent, but prices fell about 2.5 percent. The median sale price of a New London County home in September was $221,900.

Local condo prices rose 11 percent compared with a year ago, while sales were up modestly. The median condo price in September was $138,750.

“Despite rising interest rates, home sales have remained strong this entire year,” Warren said. “Median prices continue their upward surge ... indicating strong demand and a shortage of supply.”