More and more people are flocking to Boston in droves, and this population surge is impacting the housing market considerably.

For example, a report released in October by Mayor Marty Walsh’s office calls for a 20 percent increase (53,000 units) of Boston’s housing stock by 2030, in order to accommodate what’s expected to be a 15 percent increase in population in that span. To accomplish this, the City would need an estimated $21 billion to fund additional private and public construction costs.

“In general, the rapid home value appreciation we’ve seen over the past couple of years has been driven by high demand and a low number of homes for sale and for rent,” Zillow senior economist Skylar Olsen said in a statement to BostInno.

Continued Olsen:

As the population grows and more households form, this demand will only increase. It’s critical that supply also increases in order to avoid price spikes. But building in dense cities is pretty difficult to begin with, notoriously so in a place like Boston where NIMBY-ism and local regulations make new construction especially tough. If the city’s population grows without significant new housing construction to accompany it, then it’s likely home values will rise more quickly than they would in a more normal market.

To provide a closer look at the Boston metro market, Zillow has provided 193 pages of price data – some of which dates from 2014 all the way back to 1996. But for readers who can’t think of anything worse than scrolling through literally thousands of home and rent prices, we’re happy to offer a quick breakdown of some of the finer points.

Both Zillow home value and rent indexes (ZHVI and ZRI) represent Zillow’s median estimate (“Zestimate”) valuation for a house or apartment of a certain zip or neighborhood. If the ZHVI or ZRI for a certain Boston neighborhood has risen, that means a typical home or apartment in this location is worth or is renting for more than it was last month, fiscal quarter, or year, etc.

Three sets of data are below. The first two feature Zillow Home Value Index (ZHVI) and Rent Value Index (ZRI) prices for Boston and Cambridge zip codes. The third and final data set is a whopping 186-page breakdown of nearly 19 years worth of month-to-month Boston metro cities’ ZHVIs.

What you need to know:

  • The most expensive Greater Boston neighborhood for renters this year isn’t in Boston.
  • It’s in Cambridge. Not so surprisingly, this zip code includes Kendall Square.
  • When it comes to home values, the ZHVI for one zip code towers over the rest – and it isn’t even close. This is Downtown Boston, and it’s the only zip code with a ZHVI above a million dollars.
  • Rent and home values are spiking in neighborhoods like Dorchester, Roxbury, and Mattapan
  • Boston’s West End real estate market is slowing down, considerably, with values dropping at higher percentage rates than anywhere else in the city.

Boston Housing Data by Zip Code by Nate Boroyan

Boston Rent/Home Price via Zillow by Nate Boroyan

ZHVI and ZRI Bullet points:

  • The zip code with the highest home value index in through Sept. 2014 is the 02108 ($1,052,100).
  • The average home value in the 02108, a.k.a., Downtown and Beacon Hill, is 26 percent ($216,700) more than the next most expensive zip, 02116, a.k.a Back Bay ($835,400)
  • The 02121 (Dorchester, Roxbury) has seen home values rise the most in 2014, with a year-over-year increase of 16.5 percent.
  • The only zip code to experience a year-over-year decrease in home values was the 02114, a.k.a. the West End, where values dropped 6.1 percent to $505,300.
  • Over the last 10 years, no zip code has seen home values increase as much as the 02142. Home values in this Cambridge zip, which includes Kendall Square, have risen 5 percent in the last decade to today’s average, $765,700.
  • The Kendall/MIT area is also Greater Boston’s most expensive zip code to rent an apartment in 2014. Zillow Rent Index: $3,319.
  • In 2014, the average rent has risen the most in the 02126, a.k.a., Mattapan. Year-over-year increase: 12.3 percent
  • More than half (16) of the Greater Boston zips included in Zillow’s Boston market data saw home values reach historic peaks in Sept. 2014.
  • Since peaking in Jan. 2013, West End average home values have dropped 10.8 percent, from $566,300 to $505,300. That’s 3 percent more than the next biggest peak drop off show in the data.

And here’s the grand finale – a month-to-month look at ZHVIs for the entire Boston metro market 1996-2014.

Zillow Housing Data by Boston Zip 2014 by Nate Boroyan

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Photo via Rick Berk/CC BY 2.0

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