What are the adoption laws in Missouri?

Missouri stepparent adoption is handled under Revised Statutes of Missouri Chapter 453, and you file in the Circuit Court (the juvenile division) in your county. Missouri has 115 counties, and the clerk's office in yours can confirm local filing details.

Where you file: Your petition goes to the Circuit Court. Venue options include the county where the petitioner lives.

Residency: Missouri sets no minimum residency period before you can file (RSMo § 453.010).

Who may adopt: The statute says "any person desiring to adopt" may petition. The court approves an adoption only when the welfare of the person being adopted calls for it. If you have a question about your own situation, such as your age or the child's, the Circuit Court clerk or an attorney can confirm it.

Consent:

• A child who is 14 has a consent role in the adoption (RSMo § 453.030).
• The consents of the child's parents are addressed in that same statute and depend on your family's facts.
• If the other biological parent is unknown, unreachable or objects, speak with the court clerk or an attorney about that specific issue.

Abandonment: Missouri's abandonment provision refers to a six-month period (RSMo § 453.040). Whether it applies to your family depends on the facts, so an attorney should review any case that relies on it.

Home study: Missouri waives the home study in stepparent adoptions (RSMo § 453.070). The state does require background checks for child safety, including a criminal background check for the stepparent.

Hearing and timeline: The court holds a hearing to decide whether the adoption is finalized. A stepparent adoption in Missouri typically takes 3-6 months.

Adult adoption: Missouri permits it.

• The adoptee's own written consent alone is sufficient when he or she is 18 or older (RSMo § 453.030).
• If you are married, your spouse may join the petition. If your spouse does not, the court can hold a hearing and order joinder.
• The mandatory investigation applies to children under 18, so the statute does not require it for adults.
• A hearing is still required, and an out-of-state petitioner may appear by video if their attorney appears in person.
• Adult adoptions typically take 4-8 weeks.

Cost: Court filing fees in Missouri run about $200-$500, and the total typically comes to under $1,000 when you prepare the paperwork yourself. Hiring an attorney commonly costs $3,000-$5,000+.

After the adoption: The Missouri Department of Health and Senior Services Bureau of Vital Records is the state agency for vital records such as birth certificates. Ask the Circuit Court clerk what to do with your final decree.

Why it matters: Adoption gives your stepchild automatic inheritance rights without special planning. It also gives you medical decision authority, and your child becomes eligible for Social Security survivor benefits if something happens to you.

How we help: StepParent Adoption 360 is a document preparation service, not a law firm. You answer questions online, and we prepare the complete court document package for your county. Missouri forms must be worded correctly for the court to accept them, and our package comes with a 100% court acceptance guarantee.