At $1,673, the current Zillow Observed Rent Index for 37923 is a typical observed asking-rent index, blended across rental types; it should be read separately from the matched 2024 ACS five-year ZCTA median gross rent of $1,371, which makes the asking index 22.0% higher. These values should not be treated as competing measures of the same lease: ACS surveys occupied renter homes and its gross-rent measure includes selected utilities, whereas ZORI tracks asking rent. The five-digit label is both a Zillow ZIP market identifier and a matched Census ZCTA, but a ZCTA is a statistical area, not identical to a USPS delivery ZIP.
Pricing momentum has cooled rather than turned negative. Exact same-month ZORI history shows 0.7% growth over one year, an annualized 1.9% change over three years, and an annualized 5.9% change across five years. The latest direction therefore breaks from the faster multi-year path, rather than confirming it. Annualized variability of monthly returns is 4.5%; this lowers confidence readers should place in a single current rent snapshot, especially for a high-variability history. The maximum drawdown was a 3.0% decline, separately indicating that declines occurred but remained limited inside recorded history. Coverage is complete over 64 monthly observations. The transparent national discovery ranks, with lower better, are 1,887 for momentum, 2,745 for stability, and 2,601 for balance. These are backward-looking measurements, not forecasts or investment recommendations.
Rather than direct bedroom observations, the local HUD FY2026 FMR/SAFMR ladder provides the scaling structure for bedroom estimates. HUD FMR/SAFMR is an administrative bedroom-specific standard rather than asking rent. Applying its bedroom proportions to the ZIP ZORI produces modelled monthly estimates of $1,340 for a studio, $1,350 for one bedroom, $1,673 for two bedrooms, $2,116 for three bedrooms, and $2,469 for four bedrooms. This construction scales the ZIP-wide asking index by the local HUD ladder; it does not measure bedroom rents or replace property advertisements. The alignment of the modelled two-bedroom figure with the all-type ZORI follows the scaling method, not independent confirmation of a market two-bedroom rent.
The income screen is more favorable than the burden statistic, and that contrast should remain unresolved rather than averaged away. A 30% screen applied to the current ZIP asking index yields required annual income of $66,920; the ZCTA median household income is $73,699, making the asking-rent-to-income screen 27.2%. That calculation is arithmetic only, not rental advice and not an applicant qualification rule. In the ACS occupied-renter survey universe, 2,534 of 5,241 renter households, or 48.3%, report spending at least 30% of income on rent. The area household median cannot identify which households carry that burden, and neither share proves anything about costs or affordability for a particular available unit. It does show why a ZIP-wide income screen should be read alongside observed household burden.
Housing composition offers context for that caution. The ZCTA contains 14,152 housing units, with 1,162 vacant, for an 8.2% vacancy rate. Its stock includes 8,350 single-family units and 1,302 units in large multifamily structures, so the aggregate spans more than one housing form. Some units are recorded vacant for rent, but that is an ACS status category rather than an inventory of comparable listings. Neither the total vacancy rate nor the rental-vacancy category can establish a specific unit’s availability, condition, price, bedroom mix, or utility treatment. Overall vacancy also includes non-rental vacancies and should not be taken as evidence that an asking-rent concession is present.
Within wider context, the Knoxville city-scope rent measure is $1,735, the Knox County county-scope rent measure is $1,768, and the Knoxville, TN metro-scope rent measure is $1,756. Each is a city, county, or metro context value rather than a direct ZIP observation. These wider measures place the ZIP’s current asking index below all three surrounding rent values, but they do not resolve the ACS-versus-ZORI difference because geography, timing, and rent definition remain distinct. The useful comparison is limited: the surrounding contexts provide scale, while the ZIP’s household burden, stock mix, and rent history remain evidence from separate universes.
For-sale conditions complicate any simple tightness reading. The Redfin direct rolling-three-month ZIP resale observation records a $426,404 median sold price, down 0.8% year over year, alongside 114 homes sold and a 43-day median marketing time. It reports inventory of 125 homes and 3.3 months of supply. Sales averaged 99.39% of list price; 26.2% sold above list and 59.7% went off market within two weeks. These are ZIP resale signals, not rental transactions or property economics. The 4.7% annualized-ZORI-to-median-price figure is only a cross-source screening ratio. The price dip and available supply challenge an inference that the small current asking-rent increase alone signals uniformly tightening conditions, while they neither disprove nor explain the longer rent history.
Several limits remain material. Asking-rent index coverage does not reveal signed lease terms, HUD standards do not reveal asking prices, ACS five-year survey estimates are not current unit-level observations, and ZIP resale medians cannot value a particular home. Before relying on a listing, check its advertised rent, bedroom count, included utilities, lease duration, availability status, and address-level condition against the modelled ladder; then inspect the property’s own sale, list, and marketing record rather than extending a ZIP median to it. Reconcile the applicable geography before comparing any figure, especially because the ZCTA and USPS ZIP are not identical. The decision-useful question is whether the specific unit’s documented rent and features still fit the stated screening assumptions after those checks.
","findings":[{"body":"Zillow’s current $1,673 ZIP index is materially above the $1,371 ACS median gross rent, but the comparison is definitional as well as numeric. ZORI is a typical asking-rent index across rental types. ACS is a five-year survey of occupied renter homes and includes selected utilities. The gap requires a check of listing terms and utility treatment, not an assumption about one unit’s lease change.","title":"Asking rent and ACS gross rent answer different questions"},{"body":"ZORI’s same-month gain slowed to 0.7% over one year, versus annualized 1.9% over three years and 5.9% over five years. This breaks from the faster long path. Complete history coverage improves measurement continuity, yet 4.5% annualized monthly variability means the current index should be treated as a range-sensitive snapshot rather than a precise stable local level. The ranks remain discovery aids, not predictions.","title":"The rent path decelerated despite a stronger longer record"},{"body":"The $66,920 income figure is simply the annual income implied by applying a 30% share to the ZIP asking index. It compares with a $73,699 median household income, but the ACS burden result remains important: 48.3% of renter households report spending at least 30% on rent. Neither statistic determines a particular applicant’s capacity or the burden attached to a specific listed unit.","title":"Income arithmetic and renter burden point in different directions"},{"body":"ZIP resale evidence is a separate market: median sold price fell 0.8% while supply was 3.3 months and sales averaged 99.39% of list price. Those signals complicate a narrative of uniform tightness based on the modest rent increase. The 4.7% annualized-rent-to-price calculation is only a cross-source screen and cannot represent property-specific economics, future outcomes, or address-level conditions.","title":"Resale evidence challenges a uniform-tightness interpretation"}],"risks":["The ZCTA statistical boundary and USPS delivery ZIP are not identical, so an address should be checked against the relevant geography before applying ZIP or ACS figures.","ACS estimates summarize occupied renter households over five years and include selected utilities; they cannot establish the current advertised rent, utility package, or affordability of an available unit.","The bedroom figures are ladder-scaled modelled estimates based on a ZIP-wide index and HUD standards, leaving actual layout, condition, availability, and lease terms unobserved.","Redfin resale measures summarize rolling three-month for-sale activity, not rental transactions; the rent-to-price screening ratio cannot substitute for an address-specific rental and sale review."],"qa":[{"a":"ZORI is a typical observed asking-rent index across rental types, while ACS median gross rent summarizes occupied renter homes in a five-year survey and includes selected utilities. The difference is therefore a cross-universe comparison. It can frame a question about listing terms, but it cannot translate directly into a lease increase, tenant payment, or unit-specific utility cost.","q":"Why is Zillow asking rent higher than ACS median gross rent here?"},{"a":"No. The studio-through-four-bedroom amounts are modelled monthly estimates. They scale the ZIP-wide ZORI using relative positions in the local HUD bedroom ladder, whose FMR/SAFMR values are administrative standards. Because no observed bedroom-specific asking-rent series is provided, the ladder cannot establish the advertised rent for a given unit, even when its bedroom count is known.","q":"Are the bedroom figures measured rents for 37923?"},{"a":"No. The required-income calculation annualizes the monthly ZIP asking index and assigns 30% of gross income to rent. It is not an underwriting standard, advice, or an applicant rule. The ACS burden share is a separate survey result for existing occupied renter households, so neither figure demonstrates whether a particular household can afford a currently available listing.","q":"Does the 30% required-income figure determine whether someone qualifies for a rental?"},{"a":"Redfin directly measures ZIP for-sale activity over a rolling three-month window, including sold-price, timing, supply, and sale-to-list outcomes. It does not describe rental transactions. Dividing annualized ZORI by median sold price can compare two series at a broad screen level, but does not provide property-specific operating results, future outcomes, or an address-level valuation.","q":"What does the Redfin resale block contribute to a rental analysis?"}],"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":"2021-03-01","rent":1148.392327},{"period":"2021-04-01","rent":1166.167161},{"period":"2021-05-01","rent":1212.819502},{"period":"2021-06-01","rent":1257.998236},{"period":"2021-07-01","rent":1312.498844},{"period":"2021-08-01","rent":1332.548205},{"period":"2021-09-01","rent":1376.854763},{"period":"2021-10-01","rent":1405.329529},{"period":"2021-11-01","rent":1433.304583},{"period":"2021-12-01","rent":1421.821122},{"period":"2022-01-01","rent":1425.239483},{"period":"2022-02-01","rent":1466.666465},{"period":"2022-03-01","rent":1492.443341},{"period":"2022-04-01","rent":1531.507011},{"period":"2022-05-01","rent":1531.21143},{"period":"2022-06-01","rent":1556.631385},{"period":"2022-07-01","rent":1561.891779},{"period":"2022-08-01","rent":1565.344337},{"period":"2022-09-01","rent":1539.618141},{"period":"2022-10-01","rent":1532.392848},{"period":"2022-11-01","rent":1532.510308},{"period":"2022-12-01","rent":1559.383929},{"period":"2023-01-01","rent":1570.135425},{"period":"2023-02-01","rent":1582.254053},{"period":"2023-03-01","rent":1596.435778},{"period":"2023-04-01","rent":1593.653922},{"period":"2023-05-01","rent":1593.612032},{"period":"2023-06-01","rent":1580.068071},{"period":"2023-07-01","rent":1591.58979},{"period":"2023-08-01","rent":1611.399549},{"period":"2023-09-01","rent":1624.695321},{"period":"2023-10-01","rent":1609.777794},{"period":"2023-11-01","rent":1609.213127},{"period":"2023-12-01","rent":1612.166974},{"period":"2024-01-01","rent":1633.054823},{"period":"2024-02-01","rent":1622.938035},{"period":"2024-03-01","rent":1612.80034},{"period":"2024-04-01","rent":1617.614358},{"period":"2024-05-01","rent":1619.61039},{"period":"2024-06-01","rent":1619.969891},{"period":"2024-07-01","rent":1603.141037},{"period":"2024-08-01","rent":1607.196377},{"period":"2024-09-01","rent":1632.305371},{"period":"2024-10-01","rent":1657.947326},{"period":"2024-11-01","rent":1675.180586},{"period":"2024-12-01","rent":1673.750555},{"period":"2025-01-01","rent":1652.615099},{"period":"2025-02-01","rent":1644.772346},{"period":"2025-03-01","rent":1625.116016},{"period":"2025-04-01","rent":1638.138862},{"period":"2025-05-01","rent":1641.048164},{"period":"2025-06-01","rent":1662.127688},{"period":"2025-07-01","rent":1674.135036},{"period":"2025-08-01","rent":1667.524997},{"period":"2025-09-01","rent":1652.495798},{"period":"2025-10-01","rent":1647.574916},{"period":"2025-11-01","rent":1640.702367},{"period":"2025-12-01","rent":1641.6494},{"period":"2026-01-01","rent":1651.283704},{"period":"2026-02-01","rent":1664.491835},{"period":"2026-03-01","rent":1686.82314},{"period":"2026-04-01","rent":1679.696286},{"period":"2026-05-01","rent":1682.093504},{"period":"2026-06-01","rent":1673.042781}],"historySummary":{"pointCount":64,"firstPeriod":"2021-03-01","latestPeriod":"2026-06-01","coverageMonths":64,"coverageRatio":1,"changes":{"1":{"years":1,"startPeriod":"2025-06-01","endPeriod":"2026-06-01","startRent":1662.127688,"endRent":1673.042781,"change":0.00656694012066783,"cagr":0.00656694012066783},"3":{"years":3,"startPeriod":"2023-06-01","endPeriod":"2026-06-01","startRent":1580.068071,"endRent":1673.042781,"change":0.05884221807048973,"cagr":0.019241464133779695},"5":{"years":5,"startPeriod":"2021-06-01","endPeriod":"2026-06-01","startRent":1257.998236,"endRent":1673.042781,"change":0.3299245842503711,"cagr":0.0586816921055322}},"maxDrawdown":-0.029886073428981308,"annualizedVolatility":0.04486831642138929,"consecutiveReturnCount":63}}