Stratford, a predominantly blue-collar city of some 50,000 people just east of Bridgeport was selected for the site largely because of its name.

The peeling, 18-room farmhouse sprawls over an expansive lot and dwarfs the two-story row houses lining this predominantly blue-collar neighborhood.

Flaget offered students in the predominantly blue-collar West End an unprecedented chance to attend a college prep high school instead of a vocational school.

Originally a predominantly blue-collar suburb with a high proportion of public housing, Ainslie has gradually gentrified, with properties regularly fetching more than $1 million.

The Russians are predominantly blue-collar workers who live in new suburbs.

According the Rev. Michael Frost, the church's assistant pastor, the predominantly blue-collar congregation of 200 or so is urged to practice tithing.

Burpengary is a predominantly blue-collar suburb with a significant proportion of the population directly employed in a labouring or trade-related jobs.

Some party members are talking of a crisis in the traditional Social Democratic "culture," a predominantly blue-collar constituency supported by a strong union movement.

The condominium village is a bastion of white-collar Republicans; Stratford is predominantly blue-collar Democratic.

David Potter, from the National Autistic Society, said the research was "interesting", but did not explain other clusters found in predominantly blue-collar areas.