Most guides on the ADA Title II deadline tell you the rule: public entities serving 50,000 or more must comply by April 24, 2026. What they do not tell you is how to determine which tier your jurisdiction falls into — and several get the classification wrong. Transit authorities, water districts, and other special district governments are Tier 2 (April 26, 2027) regardless of the metro area they serve. A transit authority in a city of 500,000 still has until 2027.
Tier 1 — 28 CFR § 35.200(b)(1)
April 24, 2026
Public entities (except special districts) with 50,000 or more population per 2020 Census
Tier 2 — 28 CFR § 35.200(b)(2)
April 26, 2027
Entities under 50,000 population AND all special district governments regardless of population
The 3-Step Population Lookup
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Step 1 — Identify your parent jurisdiction
If you work for a city department (police, parks, water), your population is the city's population — not your department's staff or service area. A city police department in a city of 45,000 uses 45,000. A county library branch uses the county's population.
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Step 2 — Look up your 2020 decennial Census count
Go to data.census.gov → search your jurisdiction name → filter to "Decennial Census" → 2020 → Table P1 (Total Population). Use the official Census count, not an estimate, not a service area calculation, not an employee count. The DOJ is explicit: 2020 decennial Census population of the parent jurisdiction.
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Step 3 — Confirm you are not a special district
If your entity is a transit authority, water district, utility board, school district operating as a special district, mosquito abatement district, or other instrumentality classified as a special district under state law — you are Tier 2 (April 2027) regardless of Step 2. The rule text at § 35.200(b)(1) explicitly carves out 'special district governments' from Tier 1.
The Special District Rule — What Most Guides Get Wrong
The exact language of 28 CFR § 35.200(b)(1) reads: “a public entity, other than a special district government, with a total population of 50,000 or more.”
That carveout is unambiguous. Special district governments land in Tier 2 automatically. The Census Bureau definition of special districts — which the DOJ follows — includes:
Transit authorities and regional transportation agencies
Water, sewer, and utility districts
School districts (when operating as special districts)
Fire protection districts
Mosquito abatement and vector control districts
Zoning and planning districts
Port authorities
Housing authorities
The transit authority example
A transit authority serving a metropolitan area of 2 million people is still a special district government. Its compliance deadline is April 26, 2027 — not April 24, 2026. The population of the metro area it serves is irrelevant. The entity's own classification as a special district is what controls.
Three Cases That Cause Confusion
County with a population right at 50,000
→ Tier 1 — April 2026
The threshold is 50,000 or more. A county with exactly 50,000 per the 2020 Census is Tier 1. Use the official Census count, not a current estimate.
City department (police, parks, public works) with its own website
→ Use the city's population
Departments are not separate entities — they use their parent city's Census population. If the city has 60,000 residents, every city department is Tier 1 regardless of how many people that department directly serves.
Public university
→ State instrumentality — Tier 1 if state has 50,000+ (it does)
Public universities are instrumentalities of state government. The state's population (not the university's enrollment) controls. All public universities in any U.S. state are Tier 1 under this logic.
What the Rollback Speculation Actually Means
The DOJ submitted an Interim Final Rule to OIRA on February 13, 2026. The National Federation of the Blind filed a formal opposition letter on March 5, 2026. As of late March 2026, no official delay has been announced. The April 24, 2026 deadline is the current legal requirement.
The underlying ADA obligation — that government services must be accessible — cannot be eliminated by the IFR. The web rule codifies a standard for what “accessible” means digitally. Even if the IFR extends a deadline, non-compliant government websites remain subject to ADA complaints, DOJ investigations, and private litigation. Complying is not just about the April 24 date.
What the Rule Does Not Require
Under 28 CFR § 35.201, five categories of content are excepted from the WCAG 2.1 AA requirement:
1.Archived content moved to a new URL specifically for archiving, with no active use
2.Pre-compliance-date PDFs and Office documents — unless currently used to apply for or access services
3.Third-party content not posted under a contractual arrangement with your entity
4.Individualized password-protected documents about a specific person or their account
5.Social media posts published before your compliance date
There are no size exemptions, no rural exemptions, and no hardship waivers. The undue burden defense (§ 35.204) is an affirmative defense requiring a written finding signed by the agency head — not a blanket opt-out.
Once You Know Your Deadline — Know Where You Stand
Run a free WCAG 2.1 AA scan on your government site. See your current error count, which criteria you fail, and what a remediation plan looks like before your deadline.
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