ELLESMERE Port and Neston has 2,500 more women than men.
The figures, taken from the 2001 national census, appear in a draft report to borough councillors about the shape of the two towns.
According to the census, there were 39,287 males and 41,845 females living in the borough.
With a total population of 81,672 people, Ellesmere Port and Neston is the most densely populated area of the county.
The largest age group was 15 to 44-year-olds with 31,931 residents, followed by 45- to 64-year-olds on 20,446.
The smallest age group was nought to four-year-olds with 4,857.
There were 5,711 over-75s.
At the time of the census, 1.2% of residents in the borough were from ethnic minorities.
Council officials say that, since the census was compiled, the borough’s population has become more diverse and now includes more residents from the enlarged European Union.