Some comparative data:

Middlesex County

848 sq mi

population 1, 465, 396

density 1,780/ sq mi

Columbia County

land area: 636 sq mi

population 62,363

density 98 / sq mi

Cambridge

land area 6.4 sq mi

population 101388

density 15,767 / sq mi

Estimated median household income in 2007: $58,850 (it was $47,979 in 2000)

Cambridge:	$58,850
Massachusetts:	$62,365

Estimated per capita income in 2007: $41,093

Cambridge:	$41,093
Massachusetts:	$32,822

Estimated median house or condo value in 2007: $558,800 (it was $331,600 in 2000)

Cambridge:	$558,800
Massachusetts:	$366,400

Hudson

land area 2.24 sq mi

population 6, 925

density: 3,094 / sq mi

Estimated median household income in 2007: $29,891 (it was $24,279 in 2000)

Hudson:	$29,891
New York:	$53,514

Estimated per capita income in 2007: $20,111

Hudson:	$20,111
New York:	$29,885

Estimated median house or condo value in 2007: $171,611 (it was $76,100 in 2000)

Hudson:	$171,611
New York:	$311,000