|— Town —|
|• Type||Open town meeting|
|• Total||68.3 sq mi (176.9 km2)|
|• Land||54.2 sq mi (140.5 km2)|
|• Water||14.1 sq mi (36.4 km2)|
|Elevation||1,080 ft (329 m)|
|• Density||22.8/sq mi (8.8/km2)|
|Time zone||Eastern (UTC-5)|
|• Summer (DST)||Eastern (UTC-4)|
|Area code(s)||351 / 978|
|GNIS feature ID||0619486|
Petersham (pronounced "Peter's ham") is a town in Worcester County, Massachusetts, United States. The population was 1,234 at the 2010 census. Petersham is home to a considerable amount of conservation land, including the Quabbin Reservation, Harvard Forest, the Swift River Reservation, and Federated Women's Club State Forest.
Petersham was first settled in 1733 and was officially incorporated in 1754. On February 4, 1787, it was the site of the second battle of Shays' Rebellion. The town is noted for its common, part of the Petersham Common Historic District. About 45 buildings are listed on the National Register of Historic Places. In July 2009, the Polus Center, a non-profit organization, announced it would close The Country Store which it owns. The store has been central to community life and in continuous operation for 163 years. The Country Store re-opened in July 2011 under new management.
The town's lands were expanded greatly by the building of the Quabbin Reservoir in 1938. When the towns of the Swift River Valley were disincorporated, Petersham and neighboring New Salem benefited the most, with Petersham receiving all of the former town of Dana, much of the town of Greenwich, and a small portion of the former town of Prescott east of the Middle Branch of the Swift River. Its modern southwestern borders lie along the former East and Middle branches of the Swift River, and includes lands that were once part of Hampshire County.
Geography and transportation 
According to the United States Census Bureau, the town has a total area of 68.3 square miles (177 km2), of which 54.2 square miles (140 km2) is land and 14.1 square miles (37 km2) (20.60%) is water. By virtue of the lands it gained in the construction of the Quabbin Reservoir, Petersham is the largest town by land area in Worcester County, and the fifth-largest town of the 351 cities and towns in the Commonwealth. It is the largest town by area in Central and Western Massachusetts, with the four largest towns being in southeastern Massachusetts (Plymouth, Middleborough, Dartmouth and Barnstable).
Much of the town's land is protected as part of the Quabbin Reservation, a protected area surrounding the Quabbin Reservoir. The town's borders extend well into the eastern branch of the reservoir, and includes the lands around what were once Mount Pomeroy, Mount Zion (the largest such "island" in the reservoir), and several other former hills. The lands of the Reservation are only accessible on foot, and include the only disincorporated areas which are accessible to the public, at the former Dana Common, a 1.5 miles (2.4 km) walk from Gate 40. Most of the town still drains into the Quabbin, along brooks that once met the Swift River. The town has several other hills that are part of the larger Worcester Hills region, including Whitney Hill and Camels Hump Hill, at 1,044 feet (318 m) the highest point in town. Several other parts of the town are also protected, including the Federated Women's Club State Forest, the Petersham State Forest, Harvard state Forest, the Popple Camp Wildlife Management Area, and the Phillipston Wildlife Management Area, the latter three extending into neighboring towns. Most of the town is rural in nature, with the largest population located near the town common.
Petersham, by virtue of its territory in the Quabbin, is the westernmost town in Worcester County, bordering Franklin County to the west and a small portion of Hampshire County to the south. Petersham is bordered by Athol to the northwest, Phillipston to the northeast, Barre and Hardwick to the southeast, Ware to the south, and New Salem to the west. From the town common, Petersham is 29 miles (47 km) northwest of Worcester, 41 miles (66 km) north-northeast of Springfield, and 66 miles (106 km) west-northwest of Boston.
There are no interstates or other limited-access highways within town, with the nearest being Route 2, the major east-west route across northern Massachusetts, which lies just north of the town. Near the center of town lies the junction of Route 32 and Route 122, with Route 32 entering from Athol and Route 122 entering from New Salem. The routes pass concurrently into the town of Barre before splitting again in the southern part of that town. The town center is also the northern terminus of Route 32A, which heads southward through Hardwick, providing a more direct route from where Route 32 turns eastward in the Hardwick village of Gilbertville to the Petersham town center. Just north of the town center, the southern terminus of Route 101 lies along Route 32, heading into Phillipston along its route towards the New Hampshire border.
There are no means of mass transit in Petersham. The nearest general aviation airports are the Orange Municipal Airport, Gardner Municipal Airport and Tanner-Hiller Airport in Barre. The nearest national air service can be reached at Bradley International Airport in Connecticut.
As of the census of 2000, there were 1,180 people, 438 households, and 299 families residing in the town. The population density was 21.8 people per square mile (8.4/km²). There were 474 housing units at an average density of 8.7 per square mile (3.4/km²). The racial makeup of the town was 97.20% White, 0.68% African American, 0.76% Native American, 0.25% Asian, 0.08% from other races, and 1.02% from two or more races. Hispanic or Latino of any race were 1.10% of the population.
There were 438 households out of which 29.5% had children under the age of 18 living with them, 59.6% were married couples living together, 5.5% had a female householder with no husband present, and 31.7% were non-families. 27.2% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 3.04.
In the town the population was spread out with 22.4% under the age of 18, 4.3% from 18 to 24, 27.0% from 25 to 44, 28.7% from 45 to 64, and 17.5% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 101.4 males. For every 100 females age 18 and over, there were 95.7 males.
The median income for a household in the town was $47,833, and the median income for a family was $58,125. Males had a median income of $39,265 versus $26,354 for females. The per capita income for the town was $24,222. About 2.0% of families and 5.8% of the population were below the poverty line, including 4.2% of those under age 18 and 1.5% of those age 65 or over.
Sites of interest 
|County-level state agency heads|
|Clerk of Courts:||Dennis P. McManus (D)|
|District Attorney:||Joseph D. Early, Jr. (D)|
|Register of Deeds:||Anthony J. Vigliotti (D)|
|Register of Probate:||Stephen Abraham (D)|
|County Sheriff:||Lew Evangelidis (R)|
|State Representative(s):||Anne M. Gobi (D)|
|State Senator(s):||Stephen M. Brewer (D)|
|Governor's Councilor(s):||Jen Caissie (R)|
|U.S. Representative(s):||James P. McGovern (D-2nd District),|
|U.S. Senators:||Elizabeth Warren (D, Mo Cowan (D))|
Notable residents 
- Lewis Bigelow, congressman
- Yodelin' Slim Clark, musician
- Austin Flint, physician
- James Hawkes, congressman
- Jonas Howe (1786-1865), Massachusetts state legislator
- Emmeline B. Wells, journalist & activist
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- "Massachusetts by Place and County Subdivision - GCT-T1. Population Estimates". United States Census Bureau. Retrieved July 12, 2011.
- "1990 Census of Population, General Population Characteristics: Massachusetts". US Census Bureau. December 1990. Table 76: General Characteristics of Persons, Households, and Families: 1990. 1990 CP-1-23. Retrieved July 12, 2011.
- "1980 Census of the Population, Number of Inhabitants: Massachusetts". US Census Bureau. December 1981. Table 4. Populations of County Subdivisions: 1960 to 1980. PC80-1-A23. Retrieved July 12, 2011.
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- "1920 Census of Population". Bureau of the Census. Number of Inhabitants, by Counties and Minor Civil Divisions. Pages 21-5 through 21-7. Massachusetts Table 2. Population of Counties by Minor Civil Divisions: 1920, 1910, and 1920. Retrieved July 12, 2011.
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- "1870 Census of the Population". Department of the Interior, Census Office. 1872. Pages 217 through 220. Table IX. Population of Minor Civil Divisions, &c. Massachusetts. Retrieved July 12, 2011.
- "1860 Census". Department of the Interior, Census Office. 1864. Pages 220 through 226. State of Massachusetts Table No. 3. Populations of Cities, Towns, &c. Retrieved July 12, 2011.
- "1850 Census". Department of the Interior, Census Office. 1854. Pages 338 through 393. Populations of Cities, Towns, &c. Retrieved July 12, 2011.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- C.B. Tillinghast. The free public libraries of Massachusetts. 1st Report of the Free Public Library Commission of Massachusetts. Boston: Wright & Potter, 1891. Google books
- Petersham Memorial Library. Retrieved 2010-11-10
- July 1, 2007 through June 30, 2008; cf. The FY2008 Municipal Pie: What’s Your Share? Commonwealth of Massachusetts, Board of Library Commissioners. Boston: 2009. Available: Municipal Pie Reports. Retrieved 2010-08-04
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