This article shows U.S. Census totals for Strafford County, New Hampshire, broken down by municipality, from 1900 to 2000.

Like most areas of New England

New England

New England is a region in the northeastern corner of the United States consisting of the six states of Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, and Connecticut...

, Strafford County

Strafford County, New Hampshire

-Demographics:As of the census of 2000, there were 112,233 people, 42,581 households, and 27,762 families residing in the county. The population density was 304 people per square mile . There were 45,539 housing units at an average density of 124 per square mile...

 is (and has been at all times since well before the 20th century) entirely divided into incorporated municipalities. There is no unincorporated territory. For any census, adding up the totals for each municipality should yield the county total.

There are two types of incorporated municipalities in New Hampshire, towns and cities. The tables below differentiate between towns and cities.

For more information on the New England municipal system, see New England town

New England town

The New England town is the basic unit of local government in each of the six New England states. Without a direct counterpart in most other U.S. states, New England towns are conceptually similar to civil townships in other states, but are incorporated, possessing powers like cities in other...

.

Corporate changes since 1900

There have been no changes in Strafford County’s municipality roster since 1900.

1900

County Total: 39,337

• Dover
  Dover, New Hampshire
  Dover is a city in Strafford County, New Hampshire, in the United States of America. The population was 29,987 at the 2010 census, the largest in the New Hampshire Seacoast region...
  
   (city) 13,207
• Rochester
  Rochester, New Hampshire
  Rochester is a city in Strafford County, New Hampshire, United States. As of the 2010 census, the city population was 29,752. The city includes the villages of East Rochester and Gonic. Rochester is home to Skyhaven Airport and the annual Rochester Fair....
  
   (city) 8,466
• Somersworth
  Somersworth, New Hampshire
  As of the census of 2000, there were 11,477 people, 4,687 households, and 3,079 families residing in the city. The population density was 1,173.4 people per square mile . There were 4,841 housing units at an average density of 494.9 per square mile...
  
   (city) 7,023
• Farmington
  Farmington, New Hampshire
  Farmington is a town located in Strafford County, New Hampshire, USA. The 2010 census reported that the town had a total population of 6,786. Farmington is home to Blue Job State Forest....
  
   2,265
• Rollinsford
  Rollinsford, New Hampshire
  Rollinsford is a town in Strafford County, New Hampshire, United States. The population was 2,527 at the 2010 census. Rollinsford includes Salmon Falls Village.-History:...
  
   1,701
• Milton
  Milton, New Hampshire
  Milton is a town in Strafford County, New Hampshire, United States. The population was 4,598 at the 2010 census. A manufacturing, resort and residential town, Milton includes the village of Milton Mills...
  
   1,625
• Barrington
  Barrington, New Hampshire
  Barrington is a town in Strafford County, New Hampshire, United States. The population was 8,576 at the 2010 census. The town is a woodland, farm and bedroom community.-History:...
  
   1,208
• Strafford
  Strafford, New Hampshire
  Strafford is a town in Strafford County, New Hampshire, United States. The population was 3,991 at the 2010 census. The two main settlements in town are the villages of Center Strafford and Bow Lake Village.- History :...
  
   1,040
• Durham
  Durham, New Hampshire
  As of the census of 2000, there were 12,664 people, 2,882 households, and 1,582 families residing in the town. The population density was 565.5 people per square mile . There were 2,923 housing units at an average density of 130.5 per square mile...
  
   996
• New Durham
  New Durham, New Hampshire
  New Durham is a town in Strafford County, New Hampshire, United States. The population was 2,638 at the 2010 census. It is drained by the Merrymeeting and Ela rivers, and is known for Merrymeeting Lake. New Durham is home to the Powder Mill Fish Hatchery...
  
   625
• Lee
  Lee, New Hampshire
  Lee is a town in Strafford County, New Hampshire, United States. The population was 4,330 at the 2010 census. The town is a rural farm and bedroom community, being close to the University of New Hampshire.-History:...
  
   545
• Madbury
  Madbury, New Hampshire
  Madbury is a town in Strafford County, New Hampshire, United States. The population was 1,771 at the 2010 census.-History:Madbury was originally a part of Dover called Barbadoes, after the West Indies island of Barbados with which settlers conducted trade, sending wood and lumber in exchange for...
  
   336
• Middleton
  Middleton, New Hampshire
  Middleton is a town in Strafford County, New Hampshire, United States. The population was 1,783 at the 2010 census.-History:Granted by the Masonian Proprietors in 1749, the town was named after Sir Charles Middleton, 1st Baron Barham, who was in charge of convoy service between Barbados and the...
  
  300

1910

County Total: 38,951

• Dover (city) 13,247
• Rochester (city) 8,868
• Somersworth (city) 6,704
• Farmington 2,621
• Rollinsford 1,836
• Milton 1,542
• Barrington 900
• Durham 823
• Strafford 786
• New Durham 523
• Lee 479
• Madbury 331
• Middleton 291

1920

County Total: 38,546

• Dover (city) 13,029
• Rochester (city) 9,673
• Somersworth (city) 6,688
• Farmington 2,461
• Rollinsford 1,701
• Milton 1,428
• Strafford 764
• Durham 749
• Barrington 616
• Lee 475
• New Durham 462
• Madbury 326
• Middleton 174

1930

County Total: 38,580

• Dover (city) 13,573
• Rochester (city) 10,209
• Somersworth (city) 5,680
• Farmington 2,698
• Rollinsford 1,409
• Durham 1,217
• Milton 1,206
• Strafford 617
• Barrington 613
• Lee 376
• New Durham 448
• Madbury 358
• Middleton 176

1940

County Total: 43,553

• Dover (city) 14,990
• Rochester (city) 12,012
• Somersworth (city) 6,136
• Farmington 3,095
• Durham 1,533
• Rollinsford 1,463
• Milton 1,279
• Barrington 780
• Strafford 714
• Lee 481
• New Durham 433
• Madbury 401
• Middleton 236

1950

County Total: 51,567

• Dover (city) 15,874
• Rochester (city) 13,776
• Somersworth (city) 6,927
• Durham 4,770
• Farmington 3,454
• Rollinsford 1,652
• Milton 1,510
• Barrington 1,052
• Strafford 770
• Lee 575
• Madbury 489
• New Durham 463
• Middleton 255

1960

County Total: 59,799

• Dover (city) 19,131
• Rochester (city) 15,927
• Somersworth (city) 8,529
• Durham 5,504
• Farmington 3,287
• Rollinsford 1,935
• Milton 1,418
• Barrington 1,036
• Lee 931
• Strafford 722
• Madbury 556
• New Durham 474
• Middleton 349

1970

County Total: 70,431

• Dover (city) 20,850
• Rochester (city) 17,938
• Somersworth (city) 9,026
• Durham 8,869
• Farmington 3,588
• Rollinsford 2,273
• Barrington 1,865
• Milton 1,859
• Lee 1,481
• Strafford 965
• Madbury 704
• New Durham 583
• Middleton 430

1980

County Total: 85,408

• Dover (city) 22,377
• Rochester (city) 21,560
• Durham 10,652
• Somersworth (city) 10,350
• Farmington 4,630
• Barrington 4,404
• Milton 2,438
• Rollinsford 2,319
• Lee 2,111
• Strafford 1,663
• New Durham 1,183
• Madbury 987
• Middleton 734

1990

County Total: 104,233

• Rochester (city) 26,630
• Dover (city) 25,042
• Durham 11,818
• Somersworth (city) 11,249
• Barrington 6,164
• Farmington 5,739
• Lee 3,729
• Milton 3,691
• Strafford 2,965
• Rollinsford 2,645
• New Durham 1,974
• Madbury 1,404
• Middleton 1,183

2000

County Total: 112,233

• Rochester (city) 28,461
• Dover (city) 26,884
• Durham 12,664
• Somersworth (city) 11,477
• Barrington 7,475
• Farmington 5,774
• Lee 4,145
• Milton 3,910
• Strafford 3,626
• Rollinsford 2,648
• New Durham 2,220
• Madbury 1,509
• Middleton 1,440