June 2026 places the typical asking-rent index for 02130 at $3,285 per month, up 1.3% from the matching month a year earlier. This is Zillow ZORI: a ZIP-level typical observed asking-rent index blended across rental types, rather than a lease-by-lease quote or a particular listing. The five-digit label 02130 is both a Zillow ZIP market identifier and a Census ZCTA match. A ZCTA is a statistical area and is not identical to a USPS delivery ZIP. The immediate decision tension is slower current rent movement against a stronger prior rent path and a separately measured resale market, which cannot be converted into a conclusion about an individual dwelling.
Two source universes show why the current index should not be substituted for a household survey estimate. The matched Census ZCTA's ACS 2024 five-year survey places median gross rent at $2,426, with a $120 90% margin of error; it surveys occupied renter homes and includes selected utilities. ZORI is 35.4% higher, but that comparison does not describe a new-lease premium or a unit's utility package. HUD FMR/SAFMR is instead an administrative, bedroom-specific standard, not asking rent. Scaling ZIP ZORI by the local HUD ladder produces modelled monthly estimates of $2,318 for a studio, $2,503 for one bedroom, $3,285 for two, $4,107 for three, and $4,350 for four; the local HUD two-bedroom standard is $2,311. These are modelled estimates, never measured bedroom rents.
Affordability looks different depending on whether the evidence concerns current asking rent or occupied households. ACS reports 10,128 renter-occupied homes and 4,335 households with gross rent at or above the 30% income threshold, a 42.8% burden share. Matched ZCTA median household income is $131,551. Applying that structural screen mechanically to current ZORI produces $131,400 of required annual income. This arithmetic closely brackets the area median, but it is not advice, an applicant qualification rule, or evidence of what any renter pays. The burden result is retrospective survey evidence for occupied renter homes; it neither identifies today's available supply nor proves a particular household's situation.
That same survey counts 19,120 housing units. Its occupied stock is 55.5% renter occupied, and its total vacancy rate is 4.6%; it classifies 2,998 units as single family and 3,966 as large multifamily. Those categories describe stock rather than rental listings. The vacancy rate pools the survey's vacancy categories and is not a current availability measure, so it cannot prove that a particular unit is empty or attainable. Similarly, the renter share shows the composition of occupied housing, not the rent level, condition, utilities, or lease terms for a property.
Broader values provide a directional benchmark, not substitutions for 02130. The City of Boston context rent is $3,469, the Suffolk County context rent is $3,423, and the Boston-Cambridge-Newton, MA-NH metro context rent is $3,210; each is a wider-scope context value rather than ZIP rental evidence. The local asking index lies below the named city and county readings but above the named metro reading. These comparisons do not turn city, county, or metro observations into ZIP comps, and they leave untouched the distinctions between an asking-rent index, ACS gross rent, and HUD's administrative standard.
At exact same-month endpoints, ZORI increased 1.3% annualized over one year, 2.9% over three years, and 5.2% over five years. Recent direction therefore breaks from the faster longer path rather than confirming it. The direct history has 100% coverage across 138 observations, which gives a complete record for the stated series but does not make the next reading predictable. Monthly returns had 3.3% annualized variability, so a single current ZORI point deserves more confidence as an index reading than as a precise estimate of every listing. Separately, the historical maximum drawdown reached 6.9%, evidence that this series has previously retreated. Transparent national discovery ranks among history-eligible ZIPs are 1,474 for momentum, 2,088 for stability, and 1,971 for balanced signals; lower ranks are higher positions. They sort past patterns and are not forecasts or investment recommendations.
Resale signals are direct but are not rent comps. In Redfin's direct rolling-three-month ZIP resale observation, median sold price is $839,810, 6.0% above a year earlier. It recorded 121 homes sold and a 20-day median marketing time. The same for-sale record reports 106 homes of inventory and 2.7 months of supply; average sale-to-list was 101.8%. Each of those is a for-sale/resale observation, not a rental transaction, rental comparable, or evidence of a given property's operating result. Taken together, the observed sales pace and above-list average are more assertive resale signals than the recent ZORI change. That tension challenges a simple reading in which a nearly median-income rent screen alone describes the ZIP's full housing decision context.
Annualized ZIP ZORI divided by the median sold price produces a 4.69% cross-source screening ratio. It is only a screening ratio joining an asking-rent index to a resale median; it does not measure the economics, costs, or cash flow of any individual property. The contrast between slower rent movement and the resale price change is a measured tension, not a prediction about either market. Limits also include the ZCTA-versus-delivery-ZIP boundary difference, ACS survey uncertainty, the HUD scaling method, and the blended rental types within ZORI. For a particular address, do the live asking rent, availability date, actual bedroom count, included utilities, lease term, and comparable closing record align with the index, the modelled ladder, and the rolling resale observation?