We Zoned For Families. Then We Zoned Them Out.

A Tweet (an "x...?" I don't know, I still call it Twitter like everyone else) I posted about Marblehead's public school troubles this week hit a nerve I didn't fully expect. From shock to outrage to disbelief to finger pointing at all sorts of different causes.

The numbers are stark. Since the 2016–2017 school year, enrollment in Marblehead Public Schools has fallen from 3,144 students to roughly 2,389, a 24% decline. Over the same stretch, the share of residents 65 and older climbed from 17.9% to 22.6%. Marblehead added roughly 1,100 seniors while shedding hundreds of children from its schools. No, they didn't just go to private school (that percentage has stayed at between 20-25% for the last decade), the bill for 50+ years of restrictive zoning is finally coming due.

But this isn't really just a story about Marblehead. It's a preview of where much of suburban Massachusetts is heading and in turn, a dangerous warning sign of where Massachusetts' future may be going.

The Pattern Is Wider Than One Town

Wellesley tells a similar story. In 2009, the district had 2,480 K–5 students. By 2023 that number had fallen to 1,726, a loss of 754 elementary students over 14 years. The district has since closed a school and is rebuilding others for a smaller population than they were designed to serve. Wellesley is now projected to lose another 16% of its enrollment between 2022 and 2027.

These aren't struggling communities. They're some of the most sought-after zip codes in New England, spending heavily on their schools, watching enrollment fall anyway.

Massachusetts as a whole is contracting, lower birth rates are expected to pull statewide K–12 enrollment down roughly 4.5% by 2030. Marblehead is declining at five times that rate. The gap between a town's trajectory and the statewide trend is where the housing story lives.

Zoning Broke the Cycle That Used to Regenerate These Towns

Healthy communities turn over across generations, families raise kids, kids leave, parents downsize or retire, and younger households move in.

In too many Massachusetts suburbs, that cycle has effectively been broken.

Restrictive zoning; large-lot minimums, outright bans on any form of multi-family housing like duplexes and townhomes, decades of resistance to new development; locks supply in place and forces aging in place when the desire may be 'aging in community' instead. Locked supply drives prices up. Higher prices price out younger families. Empty nesters stay put because there's nowhere more affordable to move to. The population ages in place. School enrollment follows it down.

Housing policy is demographic policy. It just plays out slowly enough that the connection is easy to miss.

Fewer Students Doesn't Mean Lower Costs

This is the part most suburban taxpayers haven't fully reckoned with.

Enrollment losses scatter across grade levels, not whole buildings. You can't easily close a school because you lost 25 kids per grade. Transportation still runs. Buildings still need maintenance and repairs. Energy bills still come due, and are increasing just like many of us are see. Special education services don't scale down with headcounts. Chapter 70 reimbursements fall as student populations decline. Overrides to pay for those increased costs now face a steeper hill to climb as more homeowners no longer have kids in the system.

That's the fiscal math of the aging suburb: fewer families with children, paying more per child to run institutions built for a much larger, younger town.

The Fix Is Straightforward, Even If the Politics Aren't

Healthy communities have always renewed themselves across generations. Families move in, raise kids, those kids grow up and move on, and new households arrive to take their place. That quiet turnover is what keeps schools full, civic life strong, and local economies vibrant.

But that cycle only works if there are homes available for the next generation.

For too long, many suburbs treated limiting housing as a way to preserve what they loved about their communities. In reality, it often did the opposite. When younger households can’t move in, communities don’t stay the same — they slowly grow older.

The towns that thrive in the decades ahead won’t be the ones that tried to freeze themselves in time. They’ll be the ones that made room for renewal: smaller homes, townhouses, ADUs, apartments near downtowns and transit — the kinds of homes that allow the next generation to build their lives in the places they love.

Because every successful community ultimately depends on a simple truth:

Every generation has to make room for the next one.