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HOUSTON MUSEUM OF NATURAL SCIENCE

EIN 74-1036131 HOUSTON, TX

Revenue 2024
$48,430,467
Expenses 2024
$49,814,036

Program services were 73.4% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
A560
Classification
2000
Street
5555 HERMANN PARK DR

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

The mission of the Houston Museum of Natural Science shall be to preserve and advance the general knowledge of natural science; to enhance in individuals the knowledge of and delight in natural science and related subjects; and to maintain and promote a museum of the first class.

Activities or mission (Part I)

The Houston Museum of Natural Science (HMNS) serves as a valuable resources for the Houston community, offering extensive collections, exciting interactive exhibits, immersive environments, engaging films, compelling traveling exhibitions, and comprehensive classroom experiences.

  • Since its establishment in 1909, the Houston Museum of Natural Science has served as a valuable resource for the Houston community, offering extensive collections, exciting interactive exhibits, immersive environments, engaging films, compelling traveling exhibitions, and comprehensive classroom experiences. See Schedule O.- In its permanent venues - drawing from its diverse collections of over 1.5 million objects - the Museum provides visitors with opportunities to expand their knowledge of anthropology, malacology, mineralogy, paleontology, entomology, chemistry, physics, biology, and other disciplines. - The 400-seat Wortham Giant Screen Theatre presents relevant and entertaining films covering a wide variety of scientific topics. The Burke Baker Planetarium provides state-of-the-art, immersive learning adventures in astronomy and related subject matter. - The Cockrell Butterfly Center is a living rain forest, allowing visitors to observe plants and insects and learn their roles in a natural ecosystem. - The George Observatory in Brazos Bend State Park is a direct link to the planets and stars, giving visitors the opportunity to stargaze with a variety of telescopes, including the 36-inch Gueymard Research Telescope, one of the largest telescopes in the U.S. available to the public.

    Expenses $33,509,327 · Revenue $25,584,451

  • The Museum's educational efforts are aimed at children and adults alike. Through hands-on interactive opportunities such as summer camps, field trips, outreach programming, teacher trainings, lecture series, and curator-led travel opportunities the Museum seeks to provide an inspirational learning environment that promotes scientific inquiry as a mode of thinking and engages the public in the wonders of science.

    Expenses $3,071,385 · Grants $8,000 · Revenue $2,761,732

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Randa Duncan Williams

    Chairman

    Total calculated
    $0
    Hours/week
    6

  • William C Montgomery

    Vice Chairman

    Total calculated
    $0
    Hours/week
    6

  • Matthew J Assiff

    Treasurer

    Total calculated
    $0
    Hours/week
    6

  • Tim Cejka

    Secretary

    Total calculated
    $0
    Hours/week
    6

  • Al Walker

    Imm. Past Chair

    Total calculated
    $0
    Hours/week
    6

  • F Fox Benton III

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Anne Hamman Brollier

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Brady F Carruth

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Ernest H Cockrell

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Carolyn Davis

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Neil W Duffin

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Douglas C Elliott

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • George R Farris

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Jason Fertitta

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Alfred C Glassell III

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Jeff B Gustavson

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Randall B Hale

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Marie Fondren Hall

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Tracey Henderson

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Maynard Holt

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Michael Holthouse

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Peter D Huddleston

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • John W Johnson

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • TMark Kelly

    Trustee

    Total calculated
    $0
    Hours/week
    1

  • Sippi K Khurana MD

    Trustee

    Total calculated
    $0
    Hours/week
    1

The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $48,430,467
    Expenses
    $49,814,036
    Contributions
    $15,217,432
    Grants paid
    $8,000
  • 2023
    Revenue
    $82,073,962
    Expenses
    $65,965,222
    Contributions
    $44,950,418
    Grants paid
    $8,000
  • 2022
    Revenue
    $46,224,188
    Expenses
    $41,601,808
    Contributions
    $14,668,268
    Grants paid
    $6,000

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2024 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2023 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2022 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2021 · 990

    Revenue
    $71,596,152
    Expenses
    $50,263,772
    Assets (EOY)
    $286,089,247

  • 2021 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2020 · 990

    Revenue
    $54,084,906
    Expenses
    $56,183,508
    Assets (EOY)
    $243,476,932

  • 2020 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2019 · 990

    Revenue
    $51,565,168
    Expenses
    $36,306,338
    Assets (EOY)
    $244,558,701

  • 2018 · 990

    Revenue
    $41,271,537
    Expenses
    $46,732,565
    Assets (EOY)
    $217,371,444

  • 2017 · 990

    Revenue
    $36,500,182
    Expenses
    $35,434,393
    Assets (EOY)
    $226,806,815

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 26 October 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.