Who Owns America's Mineral Rights: A Demographic Profile for Elder Law Attorneys and CPAs

No comprehensive public survey of mineral ownership exists. The IRS does not track mineral-interest ownership as a separate category from other passive income. State severance tax offices track operators and producers, not owners. County appraisal rolls touch ownership but are inconsistent across more than three thousand counties and often do not flag mineral interests as such when they sit beneath surface parcels already rolled up in the homestead assessment.

The figures summarized in this post are analyst estimates synthesized from National Association of Royalty Owners (NARO) membership data, industry reporting from firms such as Enverus, county appraisal information where it is accessible in bulk, and basin-level production geography. Ranges reflect modeling uncertainty rather than sampling variance — the "box" in the underlying charts is a visual convention representing the inner 50% of the estimated range, not a true quartile drawn from a sampled distribution.

For professional advisors, the practical takeaway is that precision on these numbers is unavailable. The usefulness is directional — which states are heavy in mineral owners, which age cohorts concentrate ownership, and where a practice should expect to encounter mineral interests in the normal course of work.

The most consequential pattern in the available data is that mineral ownership concentrates heavily in older cohorts. Estimated national ownership rates, by age group, sit in these ranges:

- Under 35: 0.2%–0.4% - 35–49: 0.6%–1.0% - 50–64: 1.8%–2.3% - 65–74: 3.0%–3.8% - 75+: 2.8%–3.5%

The 65–74 cohort owns producing minerals at roughly seven to nineteen times the rate of the under-35 cohort. The 75+ cohort is nearly as concentrated. Put another way, a 70-year-old American is more than ten times as likely to own producing mineral interests as a 30-year-old American.

The reason is simple and cumulative. Mineral interests in the United States are overwhelmingly inherited rather than purchased, and they accrete with age. A 70-year-old who inherited a fractional interest from a grandparent in the 1970s has had fifty years to pick up additional fractional interests through subsequent generations of family deaths. A 30-year-old typically has not yet inherited from anyone above them in the family tree. Combine multi-generational severance of surface from minerals going back to the late nineteenth century with normal demographic attrition at the top of the family tree, and ownership naturally concentrates in the retirement-age population.

For elder law attorneys, this is the single most important fact about the mineral-owning population: it is, demographically, your clientele. The age profile of mineral owners and the age profile of elder law practices overlap almost perfectly.

For CPAs, the implication is that clients approaching retirement should be affirmatively asked about mineral interests, because the odds of a client in the 60+ age band owning some are orders of magnitude higher than the general-population baseline — and because clients themselves often do not volunteer small royalty streams unprompted, particularly if the interests predate their own involvement in preparing their returns.

Ownership rates vary enormously by state. The estimated percentages below reflect the share of residents in each state who own producing mineral interests — related to but distinct from the state where the minerals themselves are located.

Tier 1 (8%–15% of residents): Oklahoma, Wyoming, North Dakota, West Virginia.

Tier 2 (4%–8%): New Mexico, Texas, Montana, Louisiana, Kansas, Arkansas.

Tier 3 (1%–3%): Pennsylvania, Ohio, Colorado, Alaska, Mississippi, Utah, Kentucky, Alabama, Michigan, California.

Tier 4 (under 1%): every other state.

Several observations matter for planners.

The four Tier-1 states are small-population states with deep oil-and-gas history. Oklahoma and West Virginia in particular have had producing interests passed down through five or more generations, which is why fractional ownership is so diffuse in the resident population. In Oklahoma, a rural resident whose grandparents homesteaded before statehood is statistically likely to have inherited something. In West Virginia, surface estate and mineral estate severance goes back to the late nineteenth-century coal era, and mineral fragmentation runs proportionately deep.

Texas is numerically largest despite sitting in the middle tier. At an estimated 4%–8% ownership rate applied to a population of roughly thirty million, Texas has the largest absolute count of mineral owners in the country — an estimated 1.5 to 2.5 million residents. An attorney or CPA practicing in Texas will encounter minerals frequently whether or not their intake forms ask about them.

Nonresident ownership creates a geographic dispersion problem that understates practical exposure in retirement destinations. Every state's resident ownership list includes some share of residents who own mineral rights located in other states. A retiree in Arizona may own producing interests in New Mexico. A snowbird in Florida may own interests inherited from Oklahoma ancestry. Migration patterns concentrate retirees in Florida, Arizona, South Carolina, Nevada, and the Carolinas — states that show up in Tier 4 on the residents-who-own chart but whose professional advisors see mineral-owning clients at rates far higher than the resident data would suggest.

Estimated owner counts and median owner ages for the states where most mineral-owning clients reside:

Texas — 4%–8% ownership rate, 1.5–2.5 million owners, median owner age 60–69. Ownership tilts toward counties with Permian, Eagle Ford, and Barnett exposure, but inherited fractional interests are widespread across the state owing to more than a century of continuous production. Community property rules and the availability of transfer-on-death deeds (since 2015) shape planning differently than in non-community-property states.

Oklahoma — 8%–15% ownership rate, 400,000–600,000 owners, median age 60–69. The highest per-capita mineral ownership rate in the country. Pooling orders administered by the Oklahoma Corporation Commission, a gross production tax regime in lieu of ad valorem assessment, and extremely fragmented fractional interests shape the practitioner workload. Oklahoma does not maintain a county-level mineral tax roll, so identifying a client's holdings often requires operator-by-operator reconstruction rather than a single county records pull.

West Virginia — 6%–12% ownership rate, 110,000–210,000 owners, median age 60–69. Marcellus and Utica activity have revived dormant interests that had not produced income in generations. Practitioners frequently encounter very small fractional interests inherited through multi-generational severance going back to coal-era deeds. Title curative work here is unusually heavy.

Pennsylvania — 1.5%–3.5% ownership rate, 200,000–450,000 owners, median age 55–64. A comparatively lower rate applied to a large population produces a meaningful absolute count. Marcellus activity concentrated in the northern tier and southwestern corner drives most current royalty income. Pennsylvania authorized transfer-on-death deeds for real property under 20 Pa.C.S. § 6201 et seq. effective January 2024; the TODD route is now available in PA but is still newer than in the western producing states, and county recorder practice is still settling.

Louisiana — 3%–7% ownership rate, 140,000–320,000 owners, median age 60–69. Community property treatment, Napoleonic Code succession, and the absence of TOD deed authority make Louisiana planning genuinely different from every other oil state. Forced heirship rules can override dispositive language in wills, which surprises attorneys whose practice is primarily in common-law jurisdictions.

New Mexico — 4%–8% ownership rate, 85,000–170,000 owners, median age 60–69. Heavy concentration in the southeast (Permian) and northwest (San Juan). Compulsory pooling under 70-2-17 NMSA is a routine feature of practice for unleased owners.

North Dakota — 7%–14% ownership rate, 60,000–110,000 owners, median age 55–64. The median age tilts younger than the other Tier-1 states because the Bakken boom brought a wave of new interest holders — second-generation owners whose interests started producing income within the last fifteen years rather than forty. The North Dakota Dormant Mineral Act (NDCC 38-18.1) creates a unique 20-year lapse mechanic that frequently generates title cure work.

Wyoming — 8%–15% ownership rate, 45,000–85,000 owners, median age 60–69. Small absolute count but concentrated ownership by resident share.

Several practice-level implications follow from the demographic profile.

Mineral interests are a routine asset class for retirement-age clients in oil-and-gas states, not an exotic outlier. Intake forms that ask about "real estate" and then move on will miss them, because mineral interests are often not top-of-mind for clients and because they sit in a different bucket of county records. Asking explicitly about royalty income, inherited minerals, or 1099-MISC forms captures what generic asset questions routinely miss.

Medicaid planning in Tier-1 and Tier-2 states routinely involves minerals. At 8%–15% ownership rates in the Tier-1 states, a meaningful share of Medicaid applicants will have mineral interests that must be valued, disclosed, and in many cases spent down, transferred outside the five-year lookback, or placed in a properly drafted Medicaid Asset Protection Trust. The lookback means planning must begin years before care is needed. Practices that handle Medicaid filings without a workflow for mineral valuation miss both risk (interests surfacing during the application) and opportunity (appropriate pre-lookback transfer planning).

Estate administration involving decedents aged 70 or older should include a mineral-interest search as a default step. An affidavit of heirship or a will that does not address mineral rights specifically is common and leaves cure work for the next generation. A brief records check in any state the decedent ever lived in or inherited from catches interests the family itself did not know existed.

Cognitive capacity and document age interact in ways unique to mineral owners. A durable power of attorney executed fifteen years ago may be refused by modern operators, even if technically valid. A will that predates a basin's discovery may not meaningfully address what has become a substantial asset. Practices should consider refreshing planning documents every five to ten years for mineral-owning clients, particularly those with holdings across multiple states, and should specifically authorize mineral transactions in DPOAs rather than relying on boilerplate general-powers language.

The typical mineral-owning client does not understand their own holdings. Multi-generational fractional ownership means the current holder often cannot state with precision how many acres, which wells, which operators, or how much the interests are worth. This is not a failure of the client — it is a natural consequence of inherited interests that never required active management during the holder's lifetime. Part of the planner's work is building the inventory, and pricing that work appropriately into the engagement matters.

For CPA practices serving similar client demographics, several implications follow.

Royalty income frequently shows up late. A new client bringing in three years of prior returns often has Schedule E entries the client themselves cannot fully explain. Treating the Schedule E reconciliation as an intake checkpoint — every new return, every new engagement — surfaces interests that deserve deeper planning.

Percentage depletion is routinely underclaimed. The 15% statutory depletion allowance under IRC §613A is one of the most valuable individual-taxpayer deductions still on the books, and generalist preparers routinely miss it or apply it inconsistently. For retirement-age clients whose combined federal, state, and NIIT marginal rate sits in the high 30s or low 40s, claiming depletion consistently is among the highest-leverage moves a CPA can make on their behalf. The deduction reduces AGI and therefore flows through to Medicare IRMAA calculations and ACA marketplace MAGI, compounding the value.

Multi-state filing obligations compound quickly. A client in Florida with inherited interests in Oklahoma, New Mexico, and Texas files three returns beyond the federal (Florida has no state income tax to file, Texas has no state income tax at all, and Oklahoma and New Mexico each require a nonresident filing). Coordinating the nonresident returns with the home-state return, including credit mechanics that prevent double taxation, is exactly the work a generalist will fumble and a practice familiar with minerals will handle routinely.

IRMAA and ACA planning become relevant earlier than most practitioners notice. The 65-to-85 demographic that owns mineral rights disproportionately is also the demographic most affected by Medicare Income-Related Monthly Adjustment Amounts and, in the pre-65 window, by ACA marketplace premium tax credits. A CPA who understands the interaction between lumpy royalty income (lease bonuses, completion spikes, sudden production ramps) and these thresholds can deliver planning value well beyond return preparation. Form SSA-44 appeals for one-time royalty spikes are particularly underused.

Basis reconstruction is a common request in estate-administration years. Heirs preparing to sell inherited minerals need a date-of-death fair market valuation to establish the stepped-up basis. A CPA whose client base includes mineral owners should either maintain a relationship with a qualified mineral appraiser or understand how to guide clients to one, because do-it-yourself basis reconstruction years after death is far weaker than a contemporaneous appraisal when the return is eventually audited.

The demographic profile is unambiguous. Mineral ownership in the United States is disproportionately concentrated in retirement-age clients, in a limited set of states, in estates that have passed through multiple generations. For elder law attorneys and CPAs serving that demographic in those states, mineral interests are part of routine practice whether or not intake systems capture them.

The data here is imperfect — no comprehensive public survey exists — but the directional picture is consistent across every source available. Tier-1 states concentrate ownership at per-capita rates high enough that nearly any retirement-focused practice will encounter minerals; Tier-2 states are numerically larger in aggregate because of population; Tier-3 and Tier-4 states still host mineral-owning retirees who inherited interests located elsewhere.

Practitioners who treat minerals as a specialty build a referral network for the ones who do not. Either approach is defensible. Drifting between the two without a plan is the one that creates exposure — missed basis step-ups, missed depletion claims, missed Medicaid lookback windows, and missed planning opportunities for clients who had no idea their Schedule E concealed an asset they needed to address before they needed care.