Rock County, MN follows the Minnesota statutory schedule. This page shows that schedule, the county's own website, and the late penalty — the county can still set its own dates, so confirm before you pay.
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…until first half — May 16, 2027
Instalment
Due date
Notes
First half
May 16, 2027
One-half of the tax must be paid by May 15 (statute: before May 16).
Second half
October 16, 2027
The remaining one-half is due by October 15 (statute: before October 16).
Schedule: www.revisor.mn.gov · Minnesota statute · not yet county-verified
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Statewide schedule — read this before you rely on it
Counties follow the statutory May 15 and October 15 dates; only a statement postmarked after April 25 pushes the first-half deadline 21 days. Most counties in this state follow these dates.
A 2% homestead or 4% nonhomestead penalty attaches the day after the due date and grows monthly to caps of 8% and 12%.
The county sends a single property tax statement covering both halves after the levy is certified, and it carries the May and October coupons.
Rock County at a glance
Population: 9,551 (Census estimate, 2023) — the 70th largest of 87 Minnesota counties and county equivalents.
Typical tax bill: $1,329 a year (median for owner-occupied homes, ACS 2022 5-year estimate) — the Minnesota median is $3,000.
Land area: 482.5 sq mi, about 19.8 people per sq mi.
County website:www.co.rock.mn.us — start here for the treasurer or tax collector page.
By post: mail to the county treasurer; the postmark usually counts, not the arrival date.
In person: the treasurer's office, with your bill or parcel number.
Escrow: if your mortgage escrows taxes, the servicer pays — you still owe any shortfall.
Is this county verified?
Not yet. Rock County is on the queue: we publish a county's own published dates once they have been checked against the county website. Ask for it and it moves up. Until then, the Minnesota statutory schedule above is the reliable starting point.
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StacyApproved is an independent reference and is not a government agency. Deadlines change and exceptions apply — always confirm with your county treasurer using the official link on this page. Nothing here is tax, legal or financial advice.