Three Massachusetts cities – Boston, Worcester and Springfield – were named among the top 20 hottest markets in the U.S. in September. 

Realtor.com analyzed cities nationwide, ranking them based on market demand—measured by unique views per property on its website — and market pace, determined by the number of days a listing remains active.

While nationally prices fell in September, the hottest markets had moderate price growth of 3.6% or more due to high demand and limited inventory, according to the report. 

Demand in the hottest markets was more than double the national level in September and up slightly from August. 

And while nationally active listerings rose 34% from last year, many of the cities on the hottest markets list experienced slower listing growth. 

Springfield was the No. 4 hottest market in September with 2.9 views per property, 28 median days on market and a median list price of $393,000.

Worcester followed two notches below at No. 6, with 2.5 views per property, 30 median days on market and a median list price of $525,000.

Boston ranked No. 13 with 2 views per property, 31 median days on market and a median list price of $840,000.

Just north of Boston, the Manchester-Nashua, New Hampshire area was, for the ninth month in a row, the country’s hottest housing market. It’s ranked among the top three markets each month for more than three years, Realtor.com said.