The cities and towns included are ones that fall into the grey, green and yellow categories on the Massachusetts weekly Covid-19 risk map.
According to Governor Baker, the step opens up a limited set of indoor recreation facilities, including roller rinks, laser tag and trampoline parks.
Occupancy limits are also expanding for those communities under this step, as outdoor public venues can now host 100 people. The 50-person limit is still in effect for high-risk communities staying in stage one of the phase.
Some minor capacity changes also come into effect for low-risk communities, meaning gyms, libraries and museums can increase to 50-percent capacity. The plan also allows retail stores to open up their fitting rooms for public use.
The Governor said that changes like these have not led to significant increases in Covid-19 transmission in other states, and he hopes Massachusetts will see the same result.
"We've proven we can contain this virus, we've proven we can reopen our economy," he said. "But people need to stay vigilant."
Cities and towns that remain in the high-risk categories for transmission will have to wait before entering the second phase, including newly-added areas like Boston, Worcester and North Andover.
WBZ NewsRadio's James Rojas (@JamesRojasWBZ) reports.