Animal-Related (D50) IRS Verified DX Registered 990 on File

ST LOUIS AQUARIUM AT UNION STATION FOUNDATION

EIN: 36-4892546 · ST LOUIS, MO 63146-0000 · United States · FY 2023 Data

3 out of 5 44 / 100 Based on 2+ years of filings

Financial strength (30%) 68/100

Reliability (20%) 45/100

Effectiveness (25%) 58/100

Impact (25%) No data yet

Financial data: FY 2023 · Scored 9/13/2026

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Mission Statement

As the nonprofit partner to the St. Louis Aquarium at Union Station, the Aquarium Foundation engages individuals through access, conservation and education programs, building powerful communities for water stewardship.

Financial Overview — FY 2023

$707K

Total Revenue

$619K

Total Expenses

$1.7M

Net Assets

Employees

Revenue Sources

Expense Breakdown

Program Expense Ratio 64.6%

Fundraising Efficiency 149.2%

Operating Reserve 32.61x

Liability-to-Asset 22.8%

Revenue Diversification 100.0%

Compared with Peers

FY 2023

Compared with 6,188 similar organizations (United States, Animal-Related, $100K–$1M in expenses), FY 2023.

This organization Middle half of peers (P25–P75) Peer median

Ratio	This org	Peer median	Position (P10 → P90)
Program expense ratio Program expenses / total expenses · higher is better	64.6%	91.9%	P10P90	Bottom quarter
Admin expense ratio Management and general / total expenses · lower is better	18.7%	6.3%	P10P90	Bottom quarter
Fundraising expense ratio Fundraising expenses / total expenses · lower is better	16.6%	0.0%	P10P90	Bottom quarter
Fundraising efficiency Fundraising expenses / gross fundraising income · lower is better	149.2%	5.3%	P10P90	Bottom quarter
Operating reserve Months of expenses covered by net assets · higher is better	32.6 mo	9.6 mo	P10P90	Top quarter
Liabilities to assets Total liabilities / total assets · lower is better	22.8%	0.5%	P10P90	Bottom quarter
Revenue concentration Share of revenue from the largest source · lower is better	100.0%	89.2%	P10P90	Bottom quarter
Revenue growth Year over year revenue growth	26.7%	6.5%	P10P90
Expense growth Year over year expense growth	-16.9%	10.1%	P10P90
Surplus margin Surplus as a share of revenue	12.5%	1.6%	P10P90

Financial History

Year	Revenue	Expenses	Net Assets	Program %
2023	$707K	$619K	$1.7M	64.6%
2022	$558K	$745K	$1.6M	55.1%
2021	$642K	$823K	N/A	—

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Organization Details

EIN: 36-4892546
State: MO
City: ST LOUIS
ZIP: 63146-0000
Classification: D50
Category: Animal-Related
Rating: 3★
Coverage: A
Last Updated: Aug 2026
IRS Ruling Year: 2018
Foundation Code
Form 990: On File

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CharityAI™ rates charities from 0 to 100 using public filings (IRS Form 990 and the equivalent registries outside the US) together with the information the charity itself provides on DonationX. Ratings are recalculated every quarter, without human bias, and shown as stars.

Four pillars

Financial strength30%

Program expense ratio, fundraising efficiency, operating reserves, liabilities and revenue diversification, compared with similar organizations.

Reliability20%

Standing with the registry, filing history, verification and how complete the profile is.

Effectiveness25%

How much goes to programs and how consistently the organization delivers them.

Impact25%

The outcomes the charity reports on DonationX: people served, cost per service and results.

Stars

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