Animal-Related (D500) IRS Verified DX Registered 990 on File

SAN FRANCISCO ZOOLOGICAL SOCIETY

EIN: 94-1429538 · SAN FRANCISCO, CA 94132-1027 · United States · FY 2025 Data

3 out of 5 57 / 100 Based on 2+ years of filings

Financial strength (30%) 79/100

Reliability (20%) 55/100

Effectiveness (25%) 88/100

Impact (25%) No data yet

Financial data: FY 2025 · Scored 9/13/2026

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Mission Statement

The mission of the San Francisco Zoo is to connect people with wildlife, inspire caring for nature and advance conservation action

Financial Overview — FY 2025

$23.1M

Total Revenue

$29.7M

Total Expenses

$14.5M

Net Assets

259

Employees

Revenue Sources

Expense Breakdown

Program Expense Ratio 85.9%

Fundraising Efficiency 409.8%

Operating Reserve 5.87x

Liability-to-Asset 27.1%

Revenue Diversification 60.7%

Executive Compensation $637K

Compared with Peers

FY 2025

Compared with 55 similar organizations (United States, Animal-Related, $10M–$100M in expenses), FY 2025.

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	85.9%	82.4%	P10P90	Above median
Admin expense ratio Management and general / total expenses · lower is better	12.0%	8.2%	P10P90	Bottom quarter
Fundraising expense ratio Fundraising expenses / total expenses · lower is better	2.1%	5.5%	P10P90	Top quarter
Fundraising efficiency Fundraising expenses / gross fundraising income · lower is better	409.8%	998.8%	P10P90	Above median
Operating reserve Months of expenses covered by net assets · higher is better	5.9 mo	26.9 mo	P10P90	Bottom quarter
Liabilities to assets Total liabilities / total assets · lower is better	27.1%	7.4%	P10P90	Bottom quarter
Revenue concentration Share of revenue from the largest source · lower is better	60.7%	78.7%	P10P90	Above median
Surplus margin Surplus as a share of revenue	-28.5%	6.9%	P10P90

Financial History

Year	Revenue	Expenses	Net Assets	Program %	Staff
2025	$23.1M	$29.7M	$14.5M	85.9%	259
2023	$22.5M	$24.7M	$19.9M	85.3%	220
2022	$36.0M	$26.3M	$19.7M	84.7%	208
2021	$37.4M	$23.5M	N/A	—	220

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Organization Details

EIN: 94-1429538
State: CA
City: SAN FRANCISCO
ZIP: 94132-1027
Classification: D500
Category: Animal-Related
Rating: 3★
Coverage: A
Last Updated: Aug 2026
IRS Ruling Year: 1929
Foundation Code: 16
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

★★★★★ 80–100 ★★★★☆ 60–79 ★★★☆☆ 40–59 ★★☆☆☆ 20–39 ★☆☆☆☆ 1–19

A pillar with no data counts as zero. Without impact metrics the score is capped at 59 (three stars): only the charity can supply that data.
The coverage grade (A to D) says how much filing data the score rests on; NONE means there is not enough to rate.
An organization that is not in good standing with its registry (for example a revoked tax exemption) is shown as Not rated.
"Compared with peers" places the charity's key ratios against organizations of the same country, sector and size.

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