County resource guide
Autism Resources in Mercer County, Missouri
Local providers, school contacts, and support services for autism families in Mercer County. Missouri statewide resources also apply.
Mercer County — home to Princeton — is one of Missouri's smallest and most rural north counties on the Iowa border. Families typically travel to Trenton or St. Joseph for autism evaluations and services. Missouri's First Steps serves children under 3, and MPACT provides free IEP advocacy statewide.
Provider directory
Local Providers10 providers in Mercer County
About our listings
Provider listings on Autism Parent Club are submitted by practices or researched from public sources. All listings are reviewed for accuracy before publication. To suggest a correction, use the “Suggest a correction” link below.
Diagnostic clinics
Formal autism evaluations by developmental pediatricians, psychologists, or neuropsychologists.
St. Joseph · multi-county
Mosaic — Northwest Missouri Developmental Services (Mercer County)
Mosaic's northwest Missouri network provides developmental disability services and autism evaluation referrals for Mercer County families in Princeton. St. Joseph (Buchanan County) serves as the primary evaluation hub for this very small, rural northwest Missouri county.
St. Joseph hub for Mercer County. Very small population; expect significant drive time.
Early Intervention (0–3)
Free services for children under 3 under IDEA Part C.
Trenton · multi-county
Missouri First Steps — Grundy County
Missouri First Steps provides free birth-to-3 early intervention services for Grundy County families in Trenton. Developmental evaluations and autism-related EI supports are coordinated through local school district First Steps contacts in this rural north-central Missouri county.
Princeton
Missouri First Steps — Mercer County Early Intervention
Missouri First Steps delivers Part C early intervention to eligible children birth to age 3 in Mercer County through home-based services in Princeton. One of Missouri's smallest counties by population, home visits are the only practical EI delivery model here.
FREE for eligible children. Home-based model for this very small, isolated county.
Speech therapy
Speech-language pathology, AAC, pragmatic language, and feeding.
Princeton · multi-county
Telehealth Speech-Language Services — NW Missouri (Mercer County)
Telehealth speech-language pathology services are the most practical option for Mercer County families in Princeton given the county's very small size and distance from regional medical centers. Multiple Missouri-licensed SLPs offer video-based evaluations and therapy for autism communication needs.
Telehealth is critical for this remote county. Ask Missouri First Steps for telehealth speech referrals.
Mental health
Therapists and psychiatrists experienced with autistic children and adults.
Trenton · multi-county
North Central Missouri Mental Health Center — Grundy County
North Central Missouri Mental Health Center provides developmental disability services and mental health supports for Grundy County families in Trenton. This north-central Missouri county on the Iowa border relies on regional CMH for autism-related community services and Medicaid waiver coordination.
Bethany · multi-county
North Central Missouri Mental Health Center — Harrison County
North Central Missouri Mental Health Center serves Harrison County with developmental disability services and mental health supports for families in Bethany. This north-central Missouri county on the Iowa border has very limited local specialty providers, relying on regional CMH and telehealth for autism services.
Parent & family support
Parent groups, sibling programs, and family peer support.
Trenton · multi-county
Autism Society of Missouri — North-Central Missouri (Grundy County)
The Autism Society of Missouri provides virtual peer support and statewide resource connections for Grundy County families in Trenton. Online programming and the statewide autism helpline are the primary community resources for this rural north-central Missouri county.
Advocacy & legal
Legal advocates, special education advocates, and disability rights organizations.
Trenton · multi-county
MPACT — Missouri Parents Act (Grundy County)
Missouri Parents Act provides free IEP advocacy by phone and virtually for Grundy County families in Trenton. A critical remote resource for families in this rural north-central Missouri county near the Iowa border.
Bethany · multi-county
MPACT — Missouri Parents Act (Harrison County)
MPACT provides free IEP advocacy by phone and virtually for Harrison County families in Bethany. Remote services are essential for families in one of Missouri's most sparsely populated and geographically isolated north-central counties.
Princeton · multi-county
MPACT — Missouri Parents Act (Mercer County)
Missouri's federally funded PTI provides free IEP advocacy for Mercer County families in Princeton. MPACT's remote services are essential for families in one of Missouri's smallest and most isolated counties, where in-person resources are extremely limited.
FREE. Federally funded PTI. Remote/virtual services essential for this tiny county.
For providers
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Helpful guides
Guides for Mercer County families
Step-by-step help on the topics that matter most.
School & IEP
Navigating the IEP process
Your rights under IDEA, how evaluations work, and what every IEP section means.
Finding help
ABA, OT, speech and waitlists
How to find qualified providers, navigate insurance, and get off waitlists faster.
Getting started
Where to start after diagnosis
A week-by-week checklist for the first 90 days — from evaluation to early intervention.
Benefits & money
SSI, Medicaid waivers, ABLE accounts
Federal benefits your child may qualify for and how to apply without losing your spot.
Mental health
Co-occurring conditions and support
Managing anxiety, ADHD, and depression alongside an autism diagnosis.
Daily life
Sensory processing and OT
Understanding sensory needs, sensory diets, and how occupational therapy helps.
Adulthood
Employment, housing, legal planning
Supported employment, housing options, guardianship alternatives, and ABLE accounts.
See all Missouri resources
Waivers, PTI centers, and state programs apply to all families in Missouri.
Missouri state guide →Nearby counties in Missouri
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