Start with the purpose of testing
A useful IQ assessment begins with a clear question. Families may need gifted-program or school-placement documentation. Adults may want a clearer cognitive profile, Mensa-eligibility documentation, diagnostic clarification, or information to support educational and clinical planning.
The right psychologist will confirm which instrument is appropriate, whether additional achievement or adaptive-behavior testing is needed, what the report will include, and whether the receiving school or organization accepts the proposed test.
This national directory helps you locate city-specific information while explaining what a professional cognitive assessment can—and cannot—tell you.
Last updated: August 2026
IQ testing and psychology in the United States
The United States has a large and diverse population, a decentralized education system, state-based professional licensing, and wide variation in access to psychological services. Professional cognitive testing is used in school psychology, clinical psychology, neuropsychology, disability assessment, gifted education, rehabilitation, research, and selected occupational or legal settings.
The American Psychological Association explains that psychological assessment combines information from tests, interviews, records, observations, and other sources. A test score is therefore most useful when it is interpreted by a qualified professional in relation to the referral question and the individual's developmental, educational, linguistic, medical, and cultural context.
Population, age, sex, education, broadband, income, and poverty figures are from the U.S. Census Bureau QuickFacts release available in 2026. They describe national context; they are not IQ estimates.
Find professional IQ testing by U.S. city
Select your nearest city for information about professional child and adult IQ testing, WISC-V and WAIS assessments, gifted testing, Mensa-related testing, costs, the evaluation process, and choosing a qualified local provider.
All available city guides are listed alphabetically
What professional IQ testing measures
Professional intelligence tests are standardized instruments designed to compare an individual's performance with an age-appropriate normative sample. Depending on the test, the assessment may examine verbal reasoning, visual-spatial processing, fluid reasoning, working memory, processing speed, quantitative reasoning, or other cognitive domains.
Many commonly used standard scores are scaled to a mean of 100 and a standard deviation of 15. A psychologist should also consider confidence intervals and score patterns, because a Full-Scale IQ score is an estimate—not a perfectly precise measurement or a complete description of a person's abilities.
Child IQ testing
Often used to understand learning profiles, giftedness, school placement questions, cognitive strengths, and possible areas requiring support.
Adult IQ testing
May support clinical evaluation, educational planning, disability documentation, personal insight, or accepted high-IQ-society documentation.
Gifted evaluation
Requirements differ by school and district. Confirm the accepted instrument, date limits, report format, and qualifying criteria before booking.
Psychoeducational evaluation
Usually broader than an IQ test and may combine cognitive, academic, behavioral, attention, executive-function, and social-emotional measures.
Neuropsychological evaluation
May assess memory, attention, language, executive functioning, motor skills, and emotional functioning in addition to intellectual ability.
Mensa-related testing
Before testing, verify the current accepted-test and documentation rules with the organization that will review your score.
Gender, population, income, and IQ: what the statistics mean
National demographic and economic statistics help explain who may need services and where barriers to assessment may exist. They should not be converted into unsupported "average IQ" numbers for genders, racial or ethnic groups, neighborhoods, occupations, income bands, or cities.
The U.S. population is approximately 50.9% female, and the country includes substantial variation in language, education, disability status, health, migration history, and economic circumstances. These factors can affect access to education and testing, familiarity with test tasks, and the interpretation of results. They do not allow a responsible evaluator to predict an individual's intelligence.
Socioeconomic context
The U.S. Census Bureau reports a 2020–2024 median household income of $80,734 and a national poverty rate of 10.6%. Economic conditions can influence access to health care, stable housing, nutrition, high-quality schooling, tutoring, technology, and specialist assessment. That makes equitable access and culturally informed interpretation important, but income itself is not an IQ score.
How the United States compares internationally
International school assessments are more defensible for country comparisons than internet tables claiming a single "national IQ." The OECD Programme for International Student Assessment (PISA) evaluates 15-year-olds in mathematics, reading, and science; it is an education assessment, not a clinical IQ test.
| Area | United States in PISA 2022 | How to interpret it |
|---|---|---|
| Mathematics | Close to the OECD average | Reflects sampled 15-year-old students' performance, not the IQ of all Americans. |
| Reading | Above the OECD average | Measures applied reading knowledge and skills in an international education study. |
| Science | Above the OECD average | Useful for education-system comparison, but not interchangeable with WAIS or WISC results. |
The OECD reported that U.S. students performed close to the OECD average in mathematics and above the OECD average in reading and science in PISA 2022. Cross-national results reflect educational, linguistic, social, sampling, and methodological differences.
Common professional cognitive tests
- WISC-V: A widely used individually administered cognitive assessment for children ages 6:0 through 16:11. It provides a Full-Scale IQ and multiple index scores.
- WAIS-5: An individually administered measure of adult cognitive ability for ages 16:0 through 90:11, with updated norms and multiple primary and ancillary scores.
- Stanford-Binet, Fifth Edition: A broad cognitive assessment used across a wide age range and in some gifted, clinical, and developmental evaluations.
- Brief intelligence tests: Shorter measures may be appropriate for screening, but they may not satisfy school, legal, diagnostic, or organizational requirements.
- Achievement and adaptive-behavior tests: These are not IQ tests, but they may be essential when evaluating learning disorders, intellectual disability, educational needs, or everyday functioning.
How the testing process works
- Clarify the referral question: Explain why testing is needed and who will use the results.
- Confirm credentials and test acceptance: Verify the psychologist's license and make sure the receiving school, agency, or organization accepts the proposed assessment.
- Complete the intake: Provide relevant developmental, educational, medical, language, and testing history.
- Attend the assessment: Testing is generally completed individually under standardized conditions.
- Receive interpretation: The psychologist reviews scores, confidence intervals, strengths, weaknesses, behavioral observations, and contextual factors.
- Obtain documentation: Depending on the service, you may receive a score summary, feedback session, or comprehensive written report with recommendations.
Cost and insurance considerations
Fees vary widely by city, test, provider qualifications, time required, report length, and whether the service is a focused IQ assessment or a broader psychoeducational or neuropsychological evaluation. Before booking, ask for a written explanation of what is included: intake, test administration, scoring, feedback, report, school consultation, record review, and any follow-up.
Insurance may cover some assessments when medically necessary, but gifted testing, school admission testing, career exploration, or personal-interest testing is often self-pay. Confirm benefits directly with the insurer and ask the provider whether they are in network, submit claims, or provide a superbill.
How to choose a qualified provider
- Verify an active psychology license with the relevant state licensing board.
- Ask whether the psychologist routinely works with the examinee's age group and referral question.
- Confirm the exact test edition and whether it is accepted by the school, program, court, employer, or organization requesting documentation.
- Ask what the fee includes and when results and reports are normally delivered.
- Discuss language, disability accommodations, medication, sleep, hearing, vision, cultural considerations, and previous testing.
- Be cautious of guaranteed scores, "pass" promises, unsupported city IQ claims, or reports generated without appropriate administration and interpretation.
Frequently asked questions
An online quiz may provide entertainment or a rough practice score. A professional assessment uses a standardized, norm-referenced instrument administered and interpreted by a qualified psychologist. It can include confidence intervals, index scores, behavioral observations, history, and written recommendations.
The WISC-V is designed for children ages 6 years through 16 years 11 months. Depending on the referral question, a psychologist may use another cognitive test or combine cognitive and academic measures.
The WAIS-5 is an individually administered clinical measure for adolescents and adults ages 16 through 90 years 11 months. The psychologist selects the instrument that best fits the person and the purpose of the evaluation.
On many modern intelligence scales, scores are standardized so the norm-group mean is 100 and the standard deviation is 15. This is a scoring convention, not a claim that every city, demographic group, or country has an independently measured average of exactly 100.
A city or national directory should not assign intelligence levels to people based on sex or gender. Professional interpretation focuses on the individual profile and considers age, education, language, health, disability, cultural background, testing conditions, and the referral question.
No. Income does not determine an individual's intelligence. Socioeconomic conditions can affect educational opportunity, health, stress, test familiarity, and access to assessment, so psychologists interpret scores in context rather than using income as a proxy for ability.
No. An IQ test may be one component of a broader evaluation, but diagnosis and educational eligibility normally require additional history, interviews, observations, achievement testing, adaptive-behavior information, and other measures selected for the referral question.
The core cognitive testing session often takes about one to two hours, although the full appointment may be longer. Comprehensive psychoeducational or neuropsychological evaluations can require several hours across one or more sessions.
Coverage varies by plan, diagnosis, referral reason, provider network, and whether the assessment is considered medically necessary. Ask the psychologist for billing codes and contact your insurer before the appointment.
Choose a city from this directory, review the local guide, and verify age ranges, accepted tests, report requirements, cost, availability, and professional credentials directly with the provider you are considering.
Data and professional sources
- U.S. Census Bureau QuickFacts: United States — population, age, sex, education, broadband, income, and poverty statistics.
- American Psychological Association: Understanding psychological testing and assessment — overview of professional assessment and interpretation.
- Pearson WISC-V information — official age range and assessment overview.
- Pearson WAIS-5 information — official adult assessment overview and age range.
- OECD PISA 2022: United States country note — international education comparison used on this page.