Massachusetts population growth slowed in 2025 due to a slowdown in the international immigration fueling growth in recent years, new data from the Census Bureau showed. The population of Massachusetts grew 0.2% from July 2024 to July 2025, Census data released Tuesday showed, up to 7,154,084. The slowdown comes after a 1% population jump in 2024, the Census stated, the fastest annual growth since 2006. The Pioneer report argues the population trends call for policy to address housing affordability, cost-of-living pressures, taxes, and business climate. “With an aging population and low natural population growth, Massachusetts cannot afford to lose residents to other states,” Pioneer states.