Knives and pepper spray in Iowa (2026)
Last reviewed: 9 October 2026
In short: Iowa defines a dangerous weapon to include a switchblade knife and a knife with a blade over five inches. Going armed with a dangerous weapon is an offence under the section read only when the weapon is used in a crime. A ballistic knife is an offensive weapon and possessing one is a class D felony.
| Rule | What applies |
|---|---|
| Folding pocket knivesCarrying in public places | A 'dangerous weapon' includes a knife having a blade exceeding five inches in length. Going armed with a dangerous weapon is an aggravated misdemeanour only if the person uses it in the commission of a crime. [1] |
| Locking or one-handed knivesCarrying in public places | A 'switchblade knife' is listed as a dangerous weapon. A ballistic knife (a knife with a detachable blade propelled by a spring-operated mechanism, elastic material or compressed gas) is an offensive weapon, and knowingly possessing one is a class D felony. [2] |
| Fixed-blade knivesCarrying in public places | Going armed with a dangerous weapon, which includes a dagger, stiletto or knife with a blade over five inches, is an aggravated misdemeanour only if the person uses it in the commission of a crime. [1] |
| Pepper sprayCarrying in public places | ⚠ Not yet verified |
| Exceptions and legitimate reasonsCarrying in public places | ⚠ Not yet verified |
| Automatic (switchblade) knivesCarrying in public places | A switchblade knife is listed as a dangerous weapon. Going armed with a dangerous weapon is an aggravated misdemeanour only if the person uses it in the commission of a crime. A ballistic knife (detachable blade propelled by a spring, elastic material or compressed gas) is an offensive weapon. [3] |
| Blade length limitsCarrying in public places | A knife with a blade exceeding five inches is a dangerous weapon. Section 724.4 makes going armed with a dangerous weapon an offence only when it is used in the commission of a crime. [3] |
Notes
- Section 724.4 as read covers going armed with a dangerous weapon and using it in a crime. Other sections of Chapter 724 were not read.
- No section read mentions pepper spray. Other sections of Chapter 724 were not read.
- No list of exceptions for carrying knives was found in the sections read.
Sources
- Iowa Legislature: Iowa Code 2026, section 724.4 Use of a dangerous weapon in the commission of a crime (consulted 9 October 2026) · all sources
- Iowa Legislature: Iowa Code 2026, section 724.1 Offensive weapons (consulted 9 October 2026) · all sources
- Iowa Legislature: Iowa Code 2026, Section 702.7 Dangerous weapon (consulted 10 October 2026) · all sources
Iowa and neighbouring states
| State | Folding pocket knives | Locking or one-handed knives | Fixed-blade knives | Pepper spray | Exceptions and legitimate reasons |
|---|---|---|---|---|---|
| Iowa | Only an offence if used in a crime | Ballistic knife: class D felony; switchblade listed | Only an offence if used in a crime | ⚠ Not yet verified | ⚠ Not yet verified |
| Illinois | Only with intent to use unlawfully | Banned unless FOID holder or trade | Only with intent to use unlawfully | Allowed 18+ if designed solely for personal defence | FOID holders and the knife trade exempt from switchblade ban |
| Minnesota | Ordinary folding knives not named | Automatic switch blade knives banned | No general ban; school ban and unlawful-use offence | Allowed if aerosol, labelled, dated; under 16 need consent | — |
| Missouri | Concealed carry banned only in restricted areas | ⚠ Not yet verified | Concealed ban only in restricted areas | ⚠ Not yet verified | — |
| Nebraska | Concealed ban only for under-21s, prohibited persons | ⚠ Not yet verified | Concealed ban only for under-21s, prohibited persons | ⚠ Not yet verified | — |
| South Dakota | Only concealment with felony intent | ⚠ Not yet verified | Dangerous weapon includes some knives | ⚠ Not yet verified | ⚠ Not yet verified |
| Wisconsin | Knives excluded from concealed-carry ban | Any knife excluded | Any knife excluded | Allowed; under 18 forfeiture | Self-defence use exempt |
More rules in Iowa
- CannabisPossession for personal use: Criminal offence · Growing at home: No
- Car speed limitsBuilt-up areas: 20 mph business, 25 mph residential · Outside built-up areas (single carriageway): 55 mph
- Minimum age for a car driving licenceMinimum age for a car licence: 16 (intermediate licence) · Earliest age to drive a car supervised: 14 (instruction permit)
- E-bikes and speed pedelecsLegal class: Class 1-3, a bicycle · Minimum age: Class 3: 16
- FireworksConsumers may buy and use category F2 fireworks: Yes (consumer fireworks) · Minimum age to buy: 18
- Statutory minimum wageNational statutory minimum wage: Yes · Current adult minimum wage (gross): $7.25 per hour (or federal if higher)
- Using a mobile phone while drivingHolding a phone while driving banned: Banned · Hands-free use: Hands-free allowed
- Seat belts and child seatsSeat belt compulsory in front seats: Yes · Seat belt compulsory in rear seats: Under 18 only
- Tobacco and nicotine age limitsMinimum age to buy tobacco: 21 · Minimum age to buy e-cigarettes: 21
- Drinking age and alcohol salesMinimum age to buy beer and wine: 21 · Minimum age to buy spirits: 21
- Drink-driving limitsBlood alcohol limit for ordinary drivers: 0.08% · Lower limit for novice or young drivers: 0.02% (under 21)
Related pages
General information, not legal advice. Rules change: check the official source before you fly or ride.