Carnal Knowledge of a Juvenile in Louisiana: Age Gap and Penalties

Felony carnal knowledge of a juvenile in Louisiana is sexual intercourse between a person 17 or older and a minor aged 13 through 16 when the age difference is four years or more and the two are not married. A conviction carries up to ten years in prison, a fine of up to $5,000, and 25 years on the sex offender registry, along with federal firearm, passport, and immigration consequences that outlast the sentence itself.¹

What Triggers the Felony Charge

Louisiana Revised Statutes 14:80 lays out two ways the offense becomes a felony. The first, and by far the most common, applies when someone 17 or older has sexual intercourse with a minor aged 13 through 16, the age gap is four years or greater, and the two are not married. “Sexual intercourse” is defined broadly to cover oral, anal, and vaginal intercourse, and any degree of penetration completes the crime.¹

The second path involves prior conduct. A second or subsequent misdemeanor carnal knowledge offense is charged as a felony, and someone already required to register as a sex offender faces the felony even on a first misdemeanor-level incident.¹

Why the Four-Year Age Gap Matters So Much

The gap between the felony and the misdemeanor comes down to a single year of the older person’s age in many cases. Misdemeanor carnal knowledge, at R.S. 14:80.1, covers the same conduct when the age difference is under four years. Its penalty ceiling is a $1,000 fine, up to six months in parish jail, or both, with no hard labor and no lengthy registration.

A 19-year-old with a 16-year-old is a three-year gap and a misdemeanor. A 20-year-old with the same 16-year-old crosses the four-year line and becomes a felony carrying up to ten years in state prison and 25 years on the registry. One year of the older party’s age moves the case from parish jail to a decade of prison exposure and lifelong collateral consequences.

Prison Time and Fines

A conviction can bring imprisonment for up to ten years, with or without hard labor, and a fine of up to $5,000. Judges have wide latitude within that range, and sentencing tends to turn on the specific ages involved, the nature of the relationship, and the defendant’s prior record.¹

Defenses That Don’t Work

Two defenses that people commonly assume are available are ruled out by the statute itself.

The first is mistake about age. R.S. 14:80 states directly that “lack of knowledge of the juvenile’s age shall not be a defense.”¹ A fake ID, a lie about age, or an appearance older than the minor’s real age does not matter. If the minor was under 17 and the gap was four years or more, the offense is complete.

The second is consent. The statute was written specifically for situations in which the minor agreed to the contact. That is what distinguishes this crime from rape or sexual battery, which turn on force or lack of consent. The legislature treated the age gap itself as the reason the conduct is criminal, so the minor’s willingness has no legal weight. In practice, the factual defenses that remain are challenges to whether intercourse actually occurred or to the accuracy of the alleged ages.

Sex Offender Registration for 25 Years

Anyone convicted must register as a sex offender, and because the victim is a minor, the registration period is 25 years.² The clock starts at release from prison, or at sentencing if no prison time is imposed. Registration is done in person at the sheriff’s office in each parish where the person lives, works, and attends school, and it covers name, aliases, home address, employer, and school.³

Louisiana’s community notification rules reach further than most states. The registrant must mail written notice to at least one person at every residence and business within a one-mile radius in rural areas, or three-tenths of a mile in urban and suburban areas. That notice includes name, address, physical description, photograph, and offense of conviction. Because the victim was a minor, the offender must also notify the superintendent of the local school district and the superintendent of any nearby park, playground, or recreation district.⁴ Notice must also run in the official parish journal on two separate days. The process must be completed within 21 days of conviction (if the person is not in custody) or within 21 days of release, repeats with every move, and repeats at least every five years even without a move.

Failing to Register Is Its Own Felony

Missing a deadline or giving false information is a separate felony with mandatory prison time. A first offense carries a fine up to $1,000 and two to ten years at hard labor. A second offense carries a fine up to $3,000 and five to twenty years at hard labor. Neither sentence can be paroled, suspended, or served on probation, and courts have no authority to go below the minimums.⁵

Firearm, Immigration, and Travel Consequences

Federal law bars anyone convicted of a crime punishable by more than a year in prison from possessing firearms or ammunition, and Louisiana imposes its own felony firearm prohibition.⁶ Because carnal knowledge of a juvenile carries up to ten years, a conviction triggers a lifetime ban under both. Violating either creates a fresh felony charge.

For non-citizens, the consequences are usually decisive. Federal immigration law treats “sexual abuse of a minor” as an aggravated felony regardless of whether the conviction is federal or state.⁷ That classification carries mandatory removal, a permanent bar on re-entry, and a permanent bar on the good moral character needed for naturalization.⁸ A plea that looks favorable on the criminal side can still be catastrophic on the immigration side, so non-citizens should bring an immigration attorney into the case early.

Travel restrictions follow the offender across state and international borders. Under the federal Sex Offender Registration and Notification Act, a registrant moving to a new state must register in person within three business days of arriving, and must notify the current jurisdiction before leaving permanently. International travel requires notice to the jurisdiction of residence at least 21 days before departure.⁹ The State Department is required to place a visible identifier on the passports of covered sex offenders, and many countries refuse entry to holders of a marked passport.¹⁰

1
Louisiana State Legislature. Louisiana Revised Statutes Title 14 RS 14:80 – Felony Carnal Knowledge of a Juvenile
2
Louisiana State Legislature. Louisiana Revised Statutes Title 15 RS 15:543.1 – Sex Offender Notification Form
3
Louisiana State Legislature. Louisiana Revised Statutes Title 15 RS 15:542 – Registration of Sex Offenders and Child Predators
4
Louisiana State Legislature. Louisiana Revised Statutes Title 15 RS 15:543.1 – Sex Offender Notification Form
5
Louisiana State Legislature. Louisiana Revised Statutes Title 15 RS 15:542.1.4 – Failure to Register and Notify as a Sex Offender or Child Predator
6
Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts
7
Office of the Law Revision Counsel. 8 USC 1101 – Definitions
8
USCIS. Volume 12 Part F Chapter 4 – Permanent Bars to Good Moral Character
9
eCFR. 28 CFR Part 72 – Sex Offender Registration and Notification
10
Office of the Law Revision Counsel. 22 USC 212b – Unique Passport Identifiers for Covered Sex Offenders