Walworth County’s population changes with the season. Geneva Lake, Delavan Lake and Lake Como fill from Memorial Day, UW-Whitewater puts thousands of student drivers on county roads from September, and US-12 carries Chicago-to-Madison traffic through all of it. A large share of the people arrested here do not live here, which changes what matters first.
This is the Walworth counterpart to what we have written for Kenosha County and Racine County. For the county overview rather than the sequence, that is our Walworth County page.
Which court, and why the usual answer is wrong
Most pages about Walworth County OWI, including an earlier version of this one, tell you every case lands at the courthouse in Elkhorn. That is not right, and the difference is not academic. It determines which building you appear in, who prosecutes you, and what the conviction is on paper.
A first offense in Wisconsin is not a crime. Under § 346.65(2)(am)1 it is a civil forfeiture of $150 to $300. Municipalities routinely charge it under a local ordinance written in conformity with § 346.63(1) rather than under the state statute, and § 66.0114(1)(a) provides that ordinance forfeitures are collected in municipal court, where the procedures of ch. 800 apply.
Wisconsin’s own refusal statute takes this for granted. When someone refuses a chemical test, § 343.305(9)(a) directs the officer to send the Notice of Intent to Revoke to the circuit court, or to the municipal court in the municipality where the arrest was made, if the arrest was for a municipal ordinance violation and that municipality has a court. The legislature would not have written that clause if first-offense OWI never appeared in municipal court.
Walworth County has a lot of those courts. The Wisconsin court system’s 2024 municipal caseload report lists sixteen of them: Bloomfield, the towns of Delavan, East Troy, Geneva and Linn, the villages of Darien, East Troy, Fontana, Genoa City, Sharon, Walworth and Williams Bay, and the cities of Delavan, Elkhorn, Lake Geneva and Whitewater.
Your case goes to the Walworth County Circuit Court, at the Judicial Center, 1800 County Rd NN, Elkhorn, if any of these is true:
- it is a second or subsequent offense, which is criminal under § 346.65(2)(am)2 and carries jail as well as a fine;
- you were charged under the state statute rather than a local ordinance, which is what happens when a Walworth County deputy or a State Patrol trooper writes it, since neither enforces a city ordinance;
- something makes a first offense criminal anyway, such as a passenger under 16 under § 346.65(2)(f), covered at OWI with a minor passenger.
One thing is true in either court. Under § 66.0114(1)(b) you cannot dispose of an OWI ordinance violation by mailing in the money the way you can with a parking ticket: “A court appearance is required for a violation of a local ordinance in conformity with s. 346.63 (1).” That single sentence is the whole of what that subsection says about OWI, and it is worth knowing that it governs how you answer, not which courthouse you answer in.
If your citation is an ordinary traffic matter rather than impaired driving, that is racineticket.com, which covers the municipal courts directly.
The two ten-day clocks, and where each one gets sent
This runs before anything visible happens, which is why people miss it. Both clocks start from paperwork handed to you at the roadside or at the jail, not from your court date. They are different deadlines, on different forms, sent to different places.
If you took the test and were over. You have 10 days to ask the Department of Transportation, in writing, to review the administrative suspension under § 343.305(8)(b)1. If the notice reached you by mail it is 13 days, excluding Saturdays, Sundays and holidays, from the date of mailing. The statute does not leave the form to chance: § 343.305(8)(am) requires it to be titled, in no less than 16-point boldface, IMPORTANT NOTICE - RESPOND WITHIN TEN (10) DAYS. If you are holding a page with that heading on it, that is the one.
If you refused. § 343.305(9)(a)4 gives you 10 days to mail or deliver a written request for a hearing to the court whose address is printed on the Notice of Intent to Revoke. Not to the DOT. If no request arrives inside the 10 days, the revocation begins 30 days after the notice was issued and there is no hearing at all. The refusal then becomes a countable prior in its own right under § 343.307(1)(f), which is the part that costs people years later. The longer version is at the refusal hearing page.
Find the document. Read its first line. It tells you which of the two you are holding.
Under 21, and why September changes the arithmetic
From September the county’s driver population shifts, and the standard shifts with it. § 346.63(2m) makes it unlawful for a person who has not reached the legal drinking age to drive with an alcohol concentration of more than 0.0 but not more than 0.08. There is no margin in it.
For a student the fine is rarely the problem. The license is, because it reaches the drive to a clinical placement, a student-teaching assignment or the job that made the semester affordable. That is written up at absolute sobriety.
If you live in Illinois
Plenty of Walworth County arrests involve drivers heading home to another state, and the instinct is to treat a Wisconsin case as somebody else’s problem because the courthouse is two hours behind you.
The case proceeds here either way, and the ten-day clocks run from the date on your notice. Wisconsin also reads convictions in the other direction: under § 343.307(1)(d) a conviction under the law of another jurisdiction can count when a Wisconsin court calculates the penalty, and under § 343.307(1)(e) so can an out-of-state revocation for refusing a test. We covered when a prior does not count in second-offense OWI in Wisconsin.
What we would want to know first
No Wisconsin lawyer is permitted to promise you an outcome, and this is not one. These are the questions that actually move a Walworth County case:
- Which notice were you handed, and how many of the ten days are left.
- Whether the citation names a city ordinance or a state statute, because that decides which court you are in and what the conviction is on paper.
- Which agency stopped you. A Lake Geneva summer shift and a State Patrol trooper on I-43 do not run a roadside the same way.
- What the reason for the stop was, before anything about the breath test.
- Whether there are priors, including out-of-state ones, and whether they are the kind § 343.307(1) actually counts.
- Whether a license you need for work is in the way of this, including a CDL, which has its own federal rules covered at CDL and OWI.
Where we are
Our offices are at 840 Lake Avenue, Racine and 7001 30th Avenue, Kenosha, WI 53142. We do not keep an office in Walworth County and we are not going to pretend otherwise. We appear in Elkhorn regularly, and the consultation costs nothing: (262) 632-5000, answered around the clock.
If the charge is a traffic citation rather than impaired driving, see racineticket.com. If it is another criminal matter entirely, that is racinelaw.com.
General information about Wisconsin law, not legal advice, and reading it does not create an attorney-client relationship. Every case turns on its own facts. Statutes change; confirm current text at docs.legis.wisconsin.gov.
