Tool
Compare places
Put up to four U.S. cities, towns or census-designated places side by side on 29 figures: 22 measures from the ACS 2020-2024 5-year estimates, each with its margin, and their 2025 population estimate, growth, density, new homes and housing costs against income. A filled square marks a figure that differs from the first place by more than both margins of error allow; without it, the survey cannot tell the two apart.
How do Merrimac, MA compare?
| Figure | Merrimac, MA |
|---|---|
| Residents, July 2025 (estimate) | 6,818 |
| Change since April 2020 | +1.4% |
| Residents counted in the 2020 Census | 6,723 |
| Residents per square mile (2020) | 791 |
| Homes permitted in 2025 per 1,000 residents | 5.3 |
| Median home value ÷ median household income | 4.5 years of income |
| A year of median rent ÷ median income of all households (renters usually earn less) | 13.2% |
| Measure | Merrimac, MA |
|---|---|
| Total population | 6,748±17 |
| Median age | 49.4±6.8 |
| Hispanic or Latino (any race) | 2.4%±1.8 pts |
| White alone, not Hispanic | 91.3%±7.0 pts |
| Black or African American alone, not Hispanic | 0.0%±0.6 pts |
| Asian alone, not Hispanic | 0.5%±0.7 pts |
| Born outside the United States | 1.5%±1.2 pts |
| Bachelor's degree or higher (age 25+) | 41.0%±7.9 pts |
| Median household income | $123,054±$16,062 |
| Per capita income | $57,070±$7,395 |
| People below the poverty line | 9.4%±7.6 pts |
| Unemployment rate | 1.5%±1.4 pts |
| Median home value (owner-occupied) | $553,400±$37,584 |
| Median gross rent | $1,352±$325 |
| Renters paying 35% or more of income on rent | 13.7%±10.9 pts |
| Owner-occupied homes | 81.3%±7.6 pts |
| Built 2020 or later | 3.8%±2.7 pts |
| Worked from home | 8.5%±3.5 pts |
| Drove alone to work | 86.3%±5.0 pts |
| Public transportation | 2.0%±2.9 pts |
| Mean travel time to work | 32.0 min±4.1 |
| No health insurance coverage | 1.6%±1.3 pts |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census Bureau population estimates, Vintage 2025; 2020 Census; Building Permits Survey 2025 · Check it at data.census.gov