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Missouri statute 527.290 states that public notice of a name change shall be given at least three times in a newspaper published in the county where such person is residing, within 20 days after the order of court is made.

Publication: Once an order has been obtained, the practitioner must then publish the order for name change once a week for three consecutive weeks in a newspaper of general circulation in the county where the change of name was granted within twenty (20) days after the order of the court is made.

In the state of Missouri, changing the name of a minor requires written, notarized consent (agreement) of each known parent. This written consent must be filed along with the petition for name change. If the written consent of both parents is not available, service on the non-consenting party will be necessary.

How much does it cost to file a petition? Costs are different depending on the county where the petition is filed. It will likely cost between $150.00 and $200.00.

It will likely cost between $150.00 and $200.00. If I'm a step-parent, can I change my step-child's name to my name? Yes, but you must either get a signed consent from both of the natural parents, or serve the non-consenting parent with a copy of the petition and a notice of when the court will hear your petition.

You'll need to bring proof of a legal name change in Missouri (your marriage certificate, court order, and/or updated Social Security card). You may also need to provide additional information and documentation, such as your date and place of birth and proof of a Missouri address.