Property Taxes in Sioux City
Sioux City's real, current property-tax story is genuinely counterintuitive: Iowa's flat, low 3.8% income tax sits alongside a comparatively HIGH local effective property tax rate -- Ownwell's cited median of approximately 1.58% runs above both the national median (~1.02%) and this project's own verified Iowa statewide range (1.4%-1.5%).
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Learn moreA Real, Cited Median Effective Rate of Approximately 1.58%
Ownwell's cited median Sioux City, Woodbury County, IA effective property tax rate ran approximately 1.58% -- described by that same source as running significantly above the national median of approximately 1.02%. This record also flags a real, internal inconsistency in that same source's own page: it separately describes Sioux City's rate as running below an Iowa state median it cites as 1.54%, even though 1.58% is not actually lower than 1.54% -- a discrepancy this record discloses rather than silently resolves.
Iowa's Real, Genuinely Complex 'Rollback' Assessment-Limitation System
Iowa does not tax full assessed market value directly -- an annually state-certified 'rollback' percentage is applied to arrive at TAXABLE value (for example, a $250,000 assessed home subject to a 50% rollback carries a taxable value of $125,000). Under the current formula, statewide aggregate residential and agricultural value growth is capped at 3% annually, and the two property classes are linked so the faster-growing class is capped at the slower class's own rate. This limitation applies to STATEWIDE aggregate growth, not any individual home, city, or county specifically.
A Real, Cited Median Annual Dollar Bill
Ownwell's cited median annual Sioux City property tax bill ran approximately $2,404 -- nearly identical to a cited national median bill of $2,400, even though Sioux City's own effective RATE runs above the national median. This apparent tension is consistent with Sioux City's own genuinely below-national home values offsetting its above-national rate.
A Real, Cited Local Municipal Levy Rate
Sioux City's own cited FY2025-2026 municipal property tax levy ran approximately $17.66 per $1,000 of assessed/taxable value, with an overall combined levy (city + county + school district + other) cited at approximately $36 per $1,000, varying by the specific school district and county a property sits within.
Key takeaways
- Sioux City's cited median effective property tax rate runs approximately 1.58% -- above both the national median and this project's own verified Iowa statewide range.
- This record flags a real, internal inconsistency in its primary source's own text regarding the Iowa state median comparison, rather than resolving it silently.
- Iowa taxes a state-certified 'taxable value' (after an annual rollback percentage), not full market value directly -- a genuinely complex, statewide mechanism.
- Sioux City's cited median annual tax bill (~$2,404) nearly matches the national median, since its below-national home values partly offset its above-national rate.
- Sioux City's own FY2025-2026 municipal levy runs approximately $17.66/$1,000, with an overall combined levy near $36/$1,000 depending on school district and county.
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