Asking-rent momentum is the central tension in 57108. In June 2026, Zillow places its ZIP-level ZORI at $1,364 per month. ZORI is a typical observed asking-rent index blended across rental types, so it is a broad benchmark rather than the asking price or contract rent for a particular home. The exact same-month rise is 6.2% over one year, compared with annualized changes of 2.1% over three years and 4.6% over five years. Recent direction therefore confirms the longer upward path, but its current pace is faster than either longer-period measurement; it is an acceleration in past data, not a forecast.
Series quality gives the acceleration context but does not make it predictive. The history through the stated endpoint contains 66 monthly observations and 65 consecutive monthly returns, with 100% coverage. Annualized monthly-return variability is 2.5%, and the deepest recorded peak-to-trough drawdown is 2.6%. The transparent national discovery ranks among history-eligible ZIPs are 731 for momentum, 779 for stability, and 358 for the balanced measure; a lower rank is higher. These are backward-looking measurements, not investment recommendations. The limited recorded swing supports more continuity confidence in one current index snapshot than a highly jagged series would, yet it cannot establish the rent, condition, or availability of any unit.
The label has an important geographic and source boundary. ZIP 57108 is both Zillow's ZIP market identifier and a matched Census ZCTA; a ZCTA is a statistical area and is not identical to a USPS delivery ZIP. In the ACS 2024 five-year survey, occupied renter homes have median gross rent of $1,290, which includes selected utilities. The Zillow index is 5.7% above that survey median, a source difference rather than a contradiction. Separately, the FY 2026 local HUD FMR/SAFMR ladder sets a two-bedroom standard of $1,156. HUD is an administrative, bedroom-specific standard, not asking rent, and the ZIP ZORI is 18.0% above this HUD two-bedroom amount.
Bedroom figures should be used only as a consistent modelled translation of the ZIP benchmark. Scaling the ZIP ZORI by the local HUD ladder produces modelled monthly estimates of $1,021 for a studio, $1,163 for one bedroom, $1,364 for two bedrooms, $1,871 for three bedrooms, and $2,288 for four bedrooms. These are modelled estimates, never measured bedroom rents: they do not report the distribution of listings or leases in each bedroom class. Because the construction uses the local HUD relationship and a blended rental index, the output is most useful for comparing the ladder internally, while a specific listing can diverge because its actual terms and features are not inputs.
The affordability picture contains a broad-area income benchmark alongside renter-experience evidence. At a 30% share of gross income, the required-income screen for the current ZIP index is $54,560 per year. This is arithmetic, not advice and not an applicant qualification rule. The matched ZCTA's median household income is $98,197, putting annualized asking rent at 16.7% of that areawide median. In the ACS renter survey, 1,935 renter households, or 35.0%, report gross-rent burdens at or above the threshold. Gross-rent burden includes the ACS measure's selected utilities, and neither the area median nor the burden share proves what a particular household pays, earns, or can qualify for.
The matched ZCTA's housing inventory contains 14,643 units, of which 14,486 are occupied and 157 are vacant, for a 1.1% vacancy rate. The recorded structure mix includes 9,145 single-family units and 2,989 large multifamily units, but these categories do not identify a specific building's availability. For wider context only, the ZIP index is above rental context values reported for Sioux Falls (city scope), Lincoln County (county scope), and Sioux Falls, SD (metro scope). Vacancy measures also differ: the Sioux Falls city-scope rate is 4.7%, the Lincoln County county-scope rate is 2.9%, and the Sioux Falls, SD metro-scope apartment measure is 8.8%; these wider-context values are not interchangeable with the ZCTA count or proof of a vacant rental.
Several limits remain material. Zillow describes an index across rental types rather than a unit-level quote; the ACS is a survey estimate for occupied renter homes; and HUD standards serve an administrative function. The ZCTA boundary, modelled bedroom ladder, wider geographic context, and historical series therefore answer different questions and should not be merged into a single market rent. Before applying the benchmark to a property, check the advertised base rent, bedroom count, square footage, unit condition, lease term, included utilities, recurring and one-time fees, deposit, concessions, parking, pet charges, availability date, and any program terms in the listing and lease. Do the property materials show a total housing cost and lease structure that matches the benchmark being used?
","findings":[{"body":"ZIP ZORI rose 6.2% on the exact same-month measure, while the stated three- and five-year annualized rates were lower. That contrast supports the packet's accelerating history category. It confirms that the historical direction remained positive while showing a faster recent pace. It does not establish a future trajectory, a lease renewal outcome, or an investment conclusion.","title":"Acceleration exceeds the longer historical pace"},{"body":"Zillow ZORI represents a typical observed asking-rent index across rental types. ACS median gross rent describes occupied renter homes over a multi-year survey and includes selected utilities. HUD FMR/SAFMR is a bedroom-specific administrative standard. The gap between these figures reflects definitions and purposes that should remain separate, rather than evidence that any source is wrong.","title":"Three rent universes answer different questions"},{"body":"Each bedroom figure starts with the ZIP-wide Zillow index and applies the relative local HUD ladder. The process gives a uniform reference across bedroom sizes, but it does not observe the ZIP's bedroom-specific listings, signed leases, amenities, utility packages, or availability. The values must therefore be read as modelled estimates and checked against the actual property terms.","title":"Bedroom ladder is an estimate, not a listing sample"},{"body":"The matched ZCTA's vacancy rate is an all-housing stock measure, while the metro vacancy figure is explicitly an apartment measure and the city and county values are wider context. None identifies a currently rentable unit, its condition, its asking price, or its lease terms. Inventory and vacancy are market-wide context, not confirmation for a particular property.","title":"Low ZCTA vacancy does not equal unit availability"}],"risks":["The current Zillow index blends rental types and is not a property quote, so unit size, condition, lease duration, included utilities, and mandatory charges can produce a materially different advertised total.","A Census ZCTA follows statistical tabulation geography rather than USPS delivery operations. Some properties marketed under the ZIP label may not align cleanly with the matched survey area or its household characteristics.","Complete historical coverage only shows the observed index series has no indicated gaps within the period. It does not remove index methodology limits or turn backward-looking volatility, drawdown, and ranks into predictions.","Vacant housing totals include categories beyond rentals and do not expose unit condition, rent, timing, application status, concessions, or lease terms. They cannot verify availability at a particular property."],"qa":[{"a":"The figures come from separate evidence universes. Zillow ZORI is a ZIP-level asking-rent index; ACS gross rent is a five-year survey statistic for occupied renter homes that includes selected utilities; HUD FMR/SAFMR is an administrative bedroom-specific standard. Differences are expected because population, purpose, timing, and rent definition differ.","q":"Why does the report show more than one rent figure?"},{"a":"No. The studio through four-bedroom amounts are produced by scaling the ZIP ZORI with the local HUD ladder. They are modelled estimates rather than measured bedroom rents, and they do not identify the asking price, final lease rent, or included charges for any individual listing.","q":"Are the bedroom values observed rents?"},{"a":"At the stated thirty-percent benchmark, annual income required equals the monthly ZIP index multiplied across a year and divided by the threshold. It is an arithmetic screen for comparing values. It is not financial advice, a determination of affordability, or an applicant qualification criterion used by a landlord.","q":"What does the income screen mean?"},{"a":"No. The historical series describes previously observed index movements and the vacancy data are area-level counts or rates. Neither provides a listing inventory feed, unit condition, current concession, applicant status, or guaranteed rent path. Confirm the advertised total cost, availability, and lease terms from property materials.","q":"Can vacancy or history tell me whether a listing is available or will rent change?"}],"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":1034.259163},{"period":"2021-02-01","rent":1040.115102},{"period":"2021-03-01","rent":1050.608368},{"period":"2021-04-01","rent":1065.945788},{"period":"2021-05-01","rent":1082.459634},{"period":"2021-06-01","rent":1091.38515},{"period":"2021-07-01","rent":1092.881727},{"period":"2021-08-01","rent":1096.011874},{"period":"2021-09-01","rent":1102.179695},{"period":"2021-10-01","rent":1119.803175},{"period":"2021-11-01","rent":1138.44612},{"period":"2021-12-01","rent":1161.463104},{"period":"2022-01-01","rent":1175.657736},{"period":"2022-02-01","rent":1195.067436},{"period":"2022-03-01","rent":1209.928336},{"period":"2022-04-01","rent":1222.112706},{"period":"2022-05-01","rent":1221.078983},{"period":"2022-06-01","rent":1238.402986},{"period":"2022-07-01","rent":1255.065887},{"period":"2022-08-01","rent":1281.34675},{"period":"2022-09-01","rent":1280.768368},{"period":"2022-10-01","rent":1276.218443},{"period":"2022-11-01","rent":1272.353552},{"period":"2022-12-01","rent":1275.519038},{"period":"2023-01-01","rent":1274.294625},{"period":"2023-02-01","rent":1275.46234},{"period":"2023-03-01","rent":1273.187185},{"period":"2023-04-01","rent":1269.938653},{"period":"2023-05-01","rent":1275.107207},{"period":"2023-06-01","rent":1280.790812},{"period":"2023-07-01","rent":1286.749539},{"period":"2023-08-01","rent":1273.913501},{"period":"2023-09-01","rent":1269.994922},{"period":"2023-10-01","rent":1266.941887},{"period":"2023-11-01","rent":1269.296766},{"period":"2023-12-01","rent":1265.193412},{"period":"2024-01-01","rent":1278.231139},{"period":"2024-02-01","rent":1283.757397},{"period":"2024-03-01","rent":1297.930502},{"period":"2024-04-01","rent":1297.64016},{"period":"2024-05-01","rent":1301.023092},{"period":"2024-06-01","rent":1293.606883},{"period":"2024-07-01","rent":1286.818021},{"period":"2024-08-01","rent":1279.837677},{"period":"2024-09-01","rent":1276.187169},{"period":"2024-10-01","rent":1280.508518},{"period":"2024-11-01","rent":1290.663307},{"period":"2024-12-01","rent":1297.48511},{"period":"2025-01-01","rent":1282.963471},{"period":"2025-02-01","rent":1270.08009},{"period":"2025-03-01","rent":1266.588304},{"period":"2025-04-01","rent":1279.478696},{"period":"2025-05-01","rent":1281.035526},{"period":"2025-06-01","rent":1284.411668},{"period":"2025-07-01","rent":1289.406241},{"period":"2025-08-01","rent":1301.551419},{"period":"2025-09-01","rent":1312.26858},{"period":"2025-10-01","rent":1316.979139},{"period":"2025-11-01","rent":1314.671139},{"period":"2025-12-01","rent":1316.837337},{"period":"2026-01-01","rent":1328.720194},{"period":"2026-02-01","rent":1343.272016},{"period":"2026-03-01","rent":1347.996026},{"period":"2026-04-01","rent":1347.668532},{"period":"2026-05-01","rent":1353.901609},{"period":"2026-06-01","rent":1363.880342}],"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":1284.411668,"endRent":1363.880342,"change":0.061871653753927,"cagr":0.061871653753927},"3":{"years":3,"startPeriod":"2023-06-01","endPeriod":"2026-06-01","startRent":1280.790812,"endRent":1363.880342,"change":0.06487361497405875,"cagr":0.02117307525208556},"5":{"years":5,"startPeriod":"2021-06-01","endPeriod":"2026-06-01","startRent":1091.38515,"endRent":1363.880342,"change":0.24967830284295123,"cagr":0.045585726366531354}},"maxDrawdown":-0.026467468726527277,"annualizedVolatility":0.025419087332349953,"consecutiveReturnCount":65}}