Divorcing in Oshkosh means filing in Winnebago County, where the Clerk of Courts processes every petition at 415 Jackson Street on the first floor. Wisconsin is a no-fault state under Wis. Stat. § 767.315, so you only need to state that the marriage is irretrievably broken. The 2026 filing fee is $184.50, rising to $194.50 when your petition requests child support or maintenance. Below is the local roadmap: where to file, what it costs, how long it takes, and the Wisconsin statutes that govern property and your children.
Oshkosh Divorce Key Facts (2026)
| Item | Detail |
|---|---|
| County | Winnebago County |
| Filing court | Winnebago County Clerk of Courts, Circuit Court |
| Court address | 415 Jackson Street, 1st Floor, Oshkosh, WI 54901 |
| Filing fee | $184.50 (no support) / $194.50 (with support) + $20 e-filing |
| Residency requirement | 6 months in Wisconsin, 30 days in Winnebago County |
| Waiting period | 120 days minimum from service or joint filing |
| Property model | Community property (presumed equal division) |
How do I file for divorce in Oshkosh, Wisconsin?
To file for divorce in Oshkosh, you submit a Summons and Petition to the Winnebago County Clerk of Courts at 415 Jackson Street and pay the $184.50 fee ($194.50 with support requests). You can file in person on the first floor, or e-file through Wisconsin's eCourts system, which adds a $20 convenience fee. Couples filing together use a Joint Petition.
Wisconsin recognizes only one ground for divorce: the marriage is irretrievably broken, under Wis. Stat. § 767.315. You do not prove fault such as adultery or cruelty. After filing, the petitioner serves the other spouse with the Summons and Petition, which starts the mandatory waiting clock. If you have minor children, you must also complete a financial disclosure statement and a proposed parenting plan. The Winnebago County Family Court Commissioner, located in Rooms 140 to 142 of the same building, handles temporary orders for support, placement, and use of the home while the case is pending. Many Oshkosh self-filers download the Wisconsin Basic Guide to Divorce flowchart the county provides, then bring completed forms to Room 110, where three public-access terminals let you check your case on the Wisconsin Circuit Court Access (WCCA) system.
Where do I file for divorce in Oshkosh? (which courthouse)
Oshkosh residents file at the Winnebago County Courthouse, 415 Jackson Street, Oshkosh, WI 54901, with the Clerk of Courts on the first floor. The mailing address is P.O. Box 2808, Oshkosh, WI 54903. Office hours run 8 a.m. to 4:30 p.m., Monday through Friday, and the clerk's phone line is (920) 236-4848.
The courthouse sits near downtown Oshkosh on the east side of the Fox River, close to the University of Wisconsin-Oshkosh campus and the Algoma Boulevard corridor. Even if you live in nearby communities served by Winnebago County, such as Neenah, Menasha, or Omro, divorce actions for Oshkosh residents are filed and heard here. The Family Court Commissioner's office occupies Rooms 140, 141, and 142 and can be reached at (920) 236-4791. Family Court Services, a separate division supporting separating parents, operates from Room 220 at (920) 236-4762 and runs the Partners in Parenting education program. The county does not provide a self-service photocopier, so prepare copies of your petition and exhibits before arriving; staff can copy documents at $0.25 per page if needed. For scheduling questions about your hearing, call the Circuit Court Contact Line at (920) 236-4808.
How much does a divorce lawyer cost in Oshkosh?
An Oshkosh divorce lawyer typically charges $250 to $400 per hour, and a contested case in Winnebago County often runs $7,000 to $15,000 in total attorney fees. Uncontested divorces with a written agreement cost far less, frequently $1,500 to $3,500. These figures sit on top of the $184.50 court filing fee, which every petitioner pays regardless of representation.
The biggest cost driver is conflict. Cases that settle property and placement through negotiation or mediation stay on the lower end, while disputes requiring depositions, custody evaluations, or trial push fees higher. Many Oshkosh attorneys request a retainer of $2,500 to $5,000 up front, billed against hourly work. If you cannot afford the filing fee, Wisconsin offers a fee waiver through Form CV-410A for filers at or below 125% of the federal poverty guidelines, which the clerk reviews at submission. Wisconsin Judicare and the Winnebago County legal-assistance resources listed by the court can help lower-income residents. Use our divorce cost estimator to model your situation before hiring counsel, and confirm any quoted retainer covers filing, service, and the final hearing.
How long does a divorce take in Oshkosh?
A divorce in Oshkosh takes a minimum of 120 days because Wisconsin imposes a mandatory waiting period under Wis. Stat. § 767.335. The 120 days start when the responding spouse is served, or when a joint petition is filed. No final hearing can occur before that period ends, so the fastest realistic Winnebago County divorce is roughly four months.
Uncontested cases in Oshkosh typically finalize in four to six months once you add two to four weeks for the clerk to schedule the final hearing after the waiting period closes. Contested matters involving disputed property, business valuations, or custody disagreements commonly take 9 to 18 months. The 120-day waiting period cannot be shortened except in emergencies where a court finds a party's or child's health or safety is at risk. Factors that lengthen an Oshkosh case include incomplete financial disclosures, the need for a custody evaluation through Family Court Services, and a crowded circuit court calendar. After your judgment is entered, you must wait six months before remarrying anywhere in the world under Wis. Stat. § 765.03.
What are the residency requirements to file in Winnebago County?
To file for divorce in Winnebago County, at least one spouse must have lived in Wisconsin for 6 months and in Winnebago County for 30 consecutive days before filing, under Wis. Stat. § 767.301. Both conditions apply: the 6-month state requirement establishes jurisdiction, and the 30-day county requirement sets venue in Oshkosh's court.
These requirements are strictly enforced. Filing before you meet them can result in dismissal for lack of jurisdiction, forcing you to refile and pay the fee again, a principle confirmed in Siemering v. Siemering, 95 Wis. 2d 111 (Ct. App. 1980). Legal separation has no minimum state-residency requirement, though the 30-day county rule still applies. If you recently moved to Oshkosh, count your days carefully before submitting your petition.
How is property divided in a Wisconsin divorce?
Wisconsin is a community property state, so the court presumes a roughly equal 50/50 split of marital property under Wis. Stat. § 767.61. Property acquired during the marriage is divided; gifts and inheritances from third parties generally stay with the receiving spouse unless dividing them is needed to prevent hardship under § 767.61(2)(b).
The court can depart from an equal split after weighing factors in § 767.61(3), including the length of the marriage, property each spouse brought in, contributions to the marriage, earning capacity, and any substantial separate assets. Marital waste matters too: under Wis. Stat. § 767.63, property wasted within one year before filing is presumed still divisible. Retirement accounts and pensions earned during the marriage are typically split, often requiring a Qualified Domestic Relations Order. Run preliminary numbers with our divorce cost estimator and review the full property rules before negotiating a settlement.
How does child custody work in Oshkosh?
Wisconsin separates legal custody (decision-making) from physical placement (where the child lives) under Wis. Stat. § 767.41. Courts presume joint legal custody serves the child's best interests and cannot award sole legal custody without specific findings, such as a parent's inability or unwillingness to parent, or evidence of domestic abuse.
Wisconsin uses the terms legal custody and physical placement rather than "custody and visitation." The court sets a placement schedule that gives the child regularly occurring, meaningful time with each parent and maximizes that time, though maximizing does not require equal placement. Judges weigh the best-interest factors in § 767.41(5), including the child's adjustment to home and school, each parent's health, any history of abuse or substance problems, and the child's developmental needs. The court may not favor a parent based on sex or race, and it cannot deny placement for failure to pay support. Winnebago County's Family Court Services in Room 220 provides mediation and the Partners in Parenting program to help Oshkosh parents reach their own parenting plan. Estimate obligations with our child support calculator.