At $1,746 in the June 2026 Zillow reading, the ZIP’s ZORI puts an immediate decision tension in view: observed asking rents have turned lower over the past year, but the level still sits above an income-based screen. At a 30% share of income, this monthly index implies $69,840 in annual income, compared with the matched ZCTA’s $54,423 median household income, a 28.3% gap. This required-income screen is arithmetic only; it is neither advice nor an applicant qualification rule. Zillow ZORI is a typical observed asking-rent index blended across rental types, not a lease quote for a particular dwelling. The relevant question is whether address-level terms resemble this broad current index.
The five-digit 37917 label is both Zillow’s ZIP market identifier and the Census ZCTA match used here. A ZCTA is a statistical area, not identical to a USPS delivery ZIP. In the ACS 2024 five-year survey, median gross rent is $1,127; it measures occupied renter homes and includes selected utilities, so it cannot be substituted for the Zillow asking index. HUD’s FY 2026 two-bedroom FMR is $1,630. FMR/SAFMR is an administrative bedroom-specific standard, not asking rent, and it answers a different question than either ZORI or the ACS survey. The gap among these values reflects differing populations and definitions, not a contradiction or a unit-specific pricing signal.
The back record makes the one-year pullback more nuanced. Exact same-month ZORI change was −1.6% over 1 year, while the matching annualized changes were 2.0% across 3 years and 6.3% across 5 years. Thus, recent direction breaks from, rather than confirms, the longer advance; these are backward-looking measurements, not a forecast or investment recommendation. History has 100% coverage. The high-variability classification matters: monthly return changes annualize to 4.0% variability, so a single current index reading carries less stability than a calmer series would. Separately, the maximum historical peak-to-trough drawdown reached 3.3%, documenting a realized retreat. Transparent national discovery ranks among history-eligible ZIPs were 2,317 for momentum, 2,603 for stability, and 2,734 for balanced performance; a lower rank is higher, and none predicts future rent.
Bedroom detail should not be read as observed bedroom rents. Scaling ZIP ZORI with the local HUD ladder gives modelled monthly estimates of $1,393 for a studio, $1,403 for one bedroom, $1,746 for two, $2,217 for three, and $2,582 for four. These figures preserve the local HUD relative bedroom pattern while anchoring its level to ZORI; they are modelled estimates, never measured bedroom rents. The two-bedroom result aligns mechanically with the ZORI anchor, not with a sampled set of two-bedroom listings. A particular property can depart from this ladder because it is an index-based allocation rather than property-level evidence.
ACS also frames housing stock, vacancy, and burden without identifying any available unit. The ZCTA estimate contains 14,056 housing units and 1,698 vacant units, a 12.1% overall vacancy rate; the structure mix includes 9,569 single-family units and 1,850 units in large multifamily buildings. Renters account for 51.6% of occupied homes. Of renter households, 2,501, or 39.2%, reported paying at least 30% of income toward gross rent. There were 468 vacant units classified for rent, but neither total vacancy nor the count classified for rent establishes a particular unit’s condition, price, timing, or suitability. Likewise, burden is a survey statistic about households, not proof that any applicant or dwelling will face the same result.
Broader benchmarks place the current asking index near, rather than far outside, neighboring scopes: Knoxville city context rent is about $1,735, Knox County context rent is $1,768, and Knoxville, TN metro context rent is $1,756. Those city, county, and metro figures are context only and do not replace a ZIP reading. Their closeness does not resolve the ACS/ZORI difference, because the city, county, and metro series cover wider populations and remain distinct source and geographic universes. Nor do they establish the terms for any particular building, lease, or address in this ZIP.
Resale adds a divergent but separate signal. In Redfin’s direct rolling-three-month ZIP resale observation, median sold price was $299,931, up 1.7% year over year; 119 homes sold, and median marketing time was 49 days. For-sale inventory stood at 180 homes with 4.6 months of supply. The average sale-to-list ratio was 98.1%; this is a resale liquidity and negotiation observation, not a rental transaction or rental comp. Annualized ZIP ZORI divided by median sold price is 7.0%, only a cross-source screening ratio rather than a property-level income measure. The resale price increase challenges the most recent rent decline, while the marketing and sale-to-list evidence keep that tension in the for-sale universe rather than resolving the affordability screen.
No aggregate series can determine a unit’s current rent, effective rent after concessions, bedroom count, utilities, condition, availability date, or sale terms. Relevant property-level checks include contemporaneous address-level listings for asking rent, lease length, included utilities, fees, concessions, and bedroom configuration; separate resale-record checks include property type, list history, closing date, sold price, and sale-to-list terms. Check whether the HUD-based bedroom allocation matches the actual unit rather than assuming it does. The index, survey, administrative standard, and resale observation each have useful but noninterchangeable roles. What do current address-specific listing and transaction records show that these ZIP-level aggregates cannot?
","findings":[{"body":"Zillow’s current ZIP asking-rent index is $1,746. Applying the supplied 30% arithmetic screen produces required annual income of $69,840, above the matched ZCTA’s $54,423 median household income. This flags a broad affordability tension in the data, while saying nothing about an individual household’s income, credit, lease terms, or qualification.","title":"Current asking rent exceeds the median-income screen"},{"body":"The latest exact same-month rent reading declined 1.6% over one year, in contrast to annualized gains over the three- and five-year windows. Complete history coverage supports reading the reversal as an observed change in direction rather than a missing-data artifact. Elevated monthly variability and a historical drawdown mean the current index is a less certain stand-alone snapshot than a stable series would provide.","title":"The latest decline interrupts a longer upward history"},{"body":"The studio-through-four-bedroom figures are modelled estimates created by applying the local HUD bedroom ladder to the ZIP-level ZORI. They are useful for showing the ladder’s relative sizing, but not for pricing a specific apartment or house. The two-bedroom number is mechanically anchored to ZORI, and differences in utilities, unit characteristics, or lease terms can make an actual asking rent materially different.","title":"Bedroom figures are scaled estimates"},{"body":"Redfin records a ZIP resale market with a year-over-year median sold-price increase even as the latest asking-rent index declined. That directional split is a meaningful screen tension, not evidence that one market causes the other. Sold price, days on market, inventory, supply, and sale-to-list outcomes describe for-sale transactions only; they cannot substitute for rental comparables or property economics.","title":"Resale and rent signals point in different directions"}],"risks":["ZORI, ACS gross rent, and HUD FMR/SAFMR observe or set different things. Treating their gaps as a direct premium or discount for a particular unit would erase differences in population, utilities, and purpose.","The history is backward-looking, and the latest decline follows longer gains. High variability and prior drawdown experience mean an isolated current reading deserves limited confidence without current address-level terms.","Overall vacancy, units classified for rent, and renter burden are ZCTA aggregates drawn from a survey. They do not prove vacancy, affordability, condition, concessions, or applicant outcomes for an individual home.","The resale screen divides an annualized asking-rent index by a median sold price from a separate source. It excludes property expenses, transaction differences, and building characteristics, so it cannot establish a property-specific income measure."],"qa":[{"a":"Zillow uses 37917 as its ZIP market identifier, while ACS data are reported for the matching ZCTA. The ZCTA is a Census statistical area rather than a USPS delivery ZIP, so the match allows broad comparison but does not make the two geographic constructs identical. ACS is also a five-year survey, unlike the current asking-rent index.","q":"What does the five-digit match mean for the ACS comparison?"},{"a":"The required-income figure simply multiplies the ZIP’s monthly ZORI by twelve and divides by the 30% screen. It does not incorporate a household’s actual income, other resources, credit, household size, lease term, utilities, fees, or landlord standards. It therefore provides arithmetic context only, not advice or an applicant decision.","q":"Why is the income number not a renter qualification?"},{"a":"The same-month history shows that the recent one-year decline differs from the positive annualized three- and five-year records. Full coverage makes the series usable for this backward-looking comparison, yet elevated monthly-return variability and a realized maximum drawdown mean the latest index is not a settled property-level price. The supplied discovery ranks are comparative history tools, not forecasts.","q":"How should the history change the use of today’s ZORI?"},{"a":"It is annualized ZIP ZORI divided by Redfin’s rolling-three-month median sold price. Because the numerator is an asking-rent index and the denominator is a resale statistic from a separate source, it is only a cross-source screening ratio. It does not contain property expenses, lease collections, financing, or transaction-specific characteristics, and it does not describe rental transactions.","q":"What does the Redfin ratio measure?"}],"sources":[{"key":"apartment_list_time_on_market","name":"Apartment List Time on Market — listing liquidity","release":"Apartment List 2026-07","pulledAt":"2026-08-08","url":"https://www.apartmentlist.com/research/category/data-rent-estimates"},{"key":"apartment_list_vacancy","name":"Apartment List Vacancy Index — rental vacancy","release":"Apartment List 2026-07","pulledAt":"2026-08-08","url":"https://www.apartmentlist.com/research/apartment-list-vacancy-index-methodology"},{"key":"census_zcta_facts","name":"Census ACS five-year — ZCTA housing and income","release":"ACS 2024 5-year ZCTA","pulledAt":"2026-08-08","url":"https://api.census.gov/data/2024/acs/acs5.html"},{"key":"hud_zip","name":"HUD USPS crosswalk and Small Area FMRs — ZIP rent fallback","release":"ZIP-CBSA 2025Q4 + SAFMR FY2026","pulledAt":"2026-07-26","url":"https://www.huduser.gov/portal/datasets/usps_crosswalk.html"},{"key":"realtor_county","name":"Realtor.com Economic Research — county listing inventory","release":"county inventory 2026-06","pulledAt":"2026-07-28","url":"https://www.realtor.com/research/data/"},{"key":"redfin","name":"Redfin Data Center — inventory, days on market, and price cuts","release":"metro tracker through 2026-05-01","pulledAt":"2026-07-26","url":"https://www.redfin.com/news/data-center/"},{"key":"redfin_zip","name":"Redfin Data Center — ZIP resale activity and supply","release":"ZIP rolling 3 months through 2026-06-30; updated 2026-07-03","pulledAt":"2026-08-12","url":"https://www.redfin.com/news/data-center/"},{"key":"zillow_county","name":"Zillow ZHVI and ZORI — county values and rents","release":"county ZHVI/ZORI 2026-06","pulledAt":"2026-07-26","url":"https://www.zillow.com/research/data/"},{"key":"zillow_zori","name":"Zillow ZORI — metro market rents","release":"Metro_zori_uc_sfrcondomfr_sm_sa_month.csv","pulledAt":"2026-07-26","url":"https://www.zillow.com/research/data/"},{"key":"zillow_zori_city","name":"Zillow ZORI — city market rents","release":"zillow_zori_city.csv","pulledAt":"2026-07-29","url":"https://www.zillow.com/research/data/"},{"key":"zillow_zori_zip","name":"Zillow ZORI — ZIP market rents","release":"ZORI ZIP 2026-06","pulledAt":"2026-08-08","url":"https://www.zillow.com/research/data/"}],"history":[{"period":"2021-01-01","rent":1164.964401},{"period":"2021-02-01","rent":1163.342276},{"period":"2021-03-01","rent":1185.727503},{"period":"2021-04-01","rent":1227.076823},{"period":"2021-05-01","rent":1277.872337},{"period":"2021-06-01","rent":1285.474578},{"period":"2021-07-01","rent":1282.998441},{"period":"2021-08-01","rent":1301.634066},{"period":"2021-09-01","rent":1332.134907},{"period":"2021-10-01","rent":1366.510167},{"period":"2021-11-01","rent":1368.098775},{"period":"2021-12-01","rent":1366.778479},{"period":"2022-01-01","rent":1376.632649},{"period":"2022-02-01","rent":1405.233286},{"period":"2022-03-01","rent":1425.678384},{"period":"2022-04-01","rent":1443.189606},{"period":"2022-05-01","rent":1448.565734},{"period":"2022-06-01","rent":1474.630775},{"period":"2022-07-01","rent":1504.156059},{"period":"2022-08-01","rent":1521.52791},{"period":"2022-09-01","rent":1549.995179},{"period":"2022-10-01","rent":1571.398824},{"period":"2022-11-01","rent":1598.986227},{"period":"2022-12-01","rent":1613.238436},{"period":"2023-01-01","rent":1638.70741},{"period":"2023-02-01","rent":1651.673514},{"period":"2023-03-01","rent":1654.733653},{"period":"2023-04-01","rent":1647.282664},{"period":"2023-05-01","rent":1634.605614},{"period":"2023-06-01","rent":1643.542291},{"period":"2023-07-01","rent":1641.424533},{"period":"2023-08-01","rent":1668.040764},{"period":"2023-09-01","rent":1676.635483},{"period":"2023-10-01","rent":1715.616431},{"period":"2023-11-01","rent":1742.110435},{"period":"2023-12-01","rent":1736.850112},{"period":"2024-01-01","rent":1711.196265},{"period":"2024-02-01","rent":1703.882696},{"period":"2024-03-01","rent":1704.59747},{"period":"2024-04-01","rent":1727.578403},{"period":"2024-05-01","rent":1724.78715},{"period":"2024-06-01","rent":1726.161657},{"period":"2024-07-01","rent":1726.218039},{"period":"2024-08-01","rent":1715.785342},{"period":"2024-09-01","rent":1745.045257},{"period":"2024-10-01","rent":1751.06323},{"period":"2024-11-01","rent":1761.423145},{"period":"2024-12-01","rent":1747.745493},{"period":"2025-01-01","rent":1735.744573},{"period":"2025-02-01","rent":1723.459091},{"period":"2025-03-01","rent":1734.090838},{"period":"2025-04-01","rent":1759.844603},{"period":"2025-05-01","rent":1774.643806},{"period":"2025-06-01","rent":1773.013994},{"period":"2025-07-01","rent":1779.340414},{"period":"2025-08-01","rent":1780.698791},{"period":"2025-09-01","rent":1757.173003},{"period":"2025-10-01","rent":1738.102104},{"period":"2025-11-01","rent":1721.817901},{"period":"2025-12-01","rent":1740.167439},{"period":"2026-01-01","rent":1763.408441},{"period":"2026-02-01","rent":1779.558393},{"period":"2026-03-01","rent":1775.447652},{"period":"2026-04-01","rent":1750.061417},{"period":"2026-05-01","rent":1745.768152},{"period":"2026-06-01","rent":1745.5}],"historySummary":{"pointCount":66,"firstPeriod":"2021-01-01","latestPeriod":"2026-06-01","coverageMonths":66,"coverageRatio":1,"changes":{"1":{"years":1,"startPeriod":"2025-06-01","endPeriod":"2026-06-01","startRent":1773.013994,"endRent":1745.5,"change":-0.015518204646499778,"cagr":-0.015518204646499778},"3":{"years":3,"startPeriod":"2023-06-01","endPeriod":"2026-06-01","startRent":1643.542291,"endRent":1745.5,"change":0.06203534253929344,"cagr":0.020265003084448452},"5":{"years":5,"startPeriod":"2021-06-01","endPeriod":"2026-06-01","startRent":1285.474578,"endRent":1745.5,"change":0.35786427042044533,"cagr":0.06309303340844741}},"maxDrawdown":-0.033066170594148625,"annualizedVolatility":0.04016477023447455,"consecutiveReturnCount":65}}