| Index | Leominster | Massachusetts | National | 
| Income per capita | $35,716 | $38,069 | $29,829 | 
| Median household income | $63,119 | $70,954 | $55,322 | 
| Median income owner occupied | $91,986 | $95,052 | $70,586 | 
| Median income renter occupied | $43,719 | $39,116 | $35,192 | 
| Median earnings male | $47,739 | $45,946 | $36,919 | 
| Median earnings female | $32,535 | $32,028 | $26,250 | 
| Unemployment rate | 3.7% | 4.6% | 4.7% | 
| Poverty level | 11.0% | 11.4% | 15.1% | 

 
				
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				| Labour Type | Male | Female | 
| Construction industry | 8.7% | 8.7% | 
| Manufacturing sector | 16.6% | 16.6% | 
| Financial & insurance services | 4.4% | 4.4% | 
| Wholesale & retail services | 19.5% | 19.5% | 
| Public administration | 6.2% | 6.2% | 
| Transportation, warehousing & utilities | 8.2% | 8.2% | 
| Education, health & social services | 12.6% | 12.6% | 
| Other | 22.2% | 22.2% | 
| City | Population | Household Income | National Avg. | 
| Northborough, MA | 6,532 | $131,373 | 137.5% | 
| Lunenburg, MA | 1,593 | $112,273 | 102.9% | 
| South Lancaster, MA | 1,575 | $110,088 | 99.0% | 
| Groton, MA | 1,127 | $101,875 | 84.1% | 
| Devens, MA | 2,007 | $96,500 | 74.4% | 
| Leominster, MA | 41,581 | $63,119 | 14.1% | 
| City | Population | Household Income | National Avg. | 
| Catonsville, MD | 41,592 | $91,539 | 65.5% | 
| Woonsocket, RI | 41,616 | $44,310 | 19.9% | 
| Charlottetown, PE | 41,537 | n/a | |
| Rancho Palos Verdes, CA | 41,635 | $146,163 | 164.2% | 
| Mableton, GA | 41,647 | $68,777 | 24.3% | 
| Leominster, MA | 41,581 | $63,119 | 14.1% |