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Sex offenders by ZIP code in Montana

98 Montana ZIP codes, each with its own page, count and map — about 4,175 registered sex offenders we index across them. 59601 (Helena) has the most, about 376; 59601 (Helena) has the highest rate, about 118.2 per 10,000 residents.

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Public registry information. It may not be used for employment, tenant, credit or insurance decisions, or to harass or threaten anyone.

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Sex offenders by ZIP code in Montana by the numbers. What the Montana ZIP figures say.

98
Montana ZIP codes listed
4,175
registrants we index across them
59601
most registrants · Helena · about 376
118.2
per 10,000 residents in 59601 (Helena), the highest rate
  • We publish a page for 98 Montana ZIP codes, with about 4,175 registrants we index across them — about 62% of the 6,733 we index with a Montana address.
  • 59601 (Helena) has the most registrants we index, about 376, in Lewis and Clark County.
  • By rate, 59601 (Helena) is highest at about 118.2 per 10,000 residents, against a Montana average of 62.1.
  • The ZIPs fall in 42 counties; Missoula County has the most listed, 10.

Counts are registrants we index with each ZIP code’s address as of October 2026, rounded and approximate — not an official figure. The figure moves continuously — search for the current picture on any specific person. Rates use the ACS 2019-2023 5-year estimate of residents for each ZIP, which has its own margin of error. Montana sex offender statistics.

Montana sex offender list by ZIP code, county by county. Every Montana ZIP page we publish — 98 ZIP codes in 42 counties.

Each row is a ZIP code, the place it covers, the registrants we index with that ZIP and the rate per 10,000 residents. Open a ZIP for its own map, nearby ZIPs and the address check. Counties are A–Z; within a county the ZIP with the most registrants is first.

Beaverhead County1 ZIP code · about 27 registrants we index

Big Horn County1 ZIP code · about 53 registrants we index

Blaine County1 ZIP code · about 8 registrants we index

Broadwater County1 ZIP code · about 38 registrants we index

Carbon County3 ZIP codes · about 15 registrants we index

Cascade County3 ZIP codes · about 593 registrants we index

Chouteau County2 ZIP codes · about 15 registrants we index

Custer County1 ZIP code · about 60 registrants we index

Dawson County1 ZIP code · about 59 registrants we index

Fallon County1 ZIP code · about 9 registrants we index

Fergus County1 ZIP code · about 51 registrants we index

Flathead County sex offender registry6 ZIP codes · about 352 registrants we index

Gallatin County sex offender registry7 ZIP codes · about 284 registrants we index

Glacier County1 ZIP code · about 31 registrants we index

Granite County2 ZIP codes · about 18 registrants we index

Hill County1 ZIP code · about 94 registrants we index

Jefferson County2 ZIP codes · about 28 registrants we index

Lake County5 ZIP codes · about 150 registrants we index

Lewis and Clark County3 ZIP codes · about 545 registrants we index

Lincoln County3 ZIP codes · about 98 registrants we index

Madison County1 ZIP code · about 10 registrants we index

Meagher County1 ZIP code · about 6 registrants we index

Mineral County3 ZIP codes · about 34 registrants we index

Missoula County sex offender registry10 ZIP codes · about 412 registrants we index

Musselshell County1 ZIP code · about 28 registrants we index

Park County1 ZIP code · about 36 registrants we index

Phillips County1 ZIP code · about 6 registrants we index

Pondera County1 ZIP code · about 9 registrants we index

Powell County1 ZIP code · about 44 registrants we index

Ravalli County6 ZIP codes · about 199 registrants we index

Richland County2 ZIP codes · about 62 registrants we index

Roosevelt County1 ZIP code · about 52 registrants we index

Rosebud County2 ZIP codes · about 21 registrants we index

Sanders County4 ZIP codes · about 49 registrants we index

Sheridan County1 ZIP code · about 10 registrants we index

Stillwater County3 ZIP codes · about 29 registrants we index

Sweet Grass County1 ZIP code · about 13 registrants we index

Teton County2 ZIP codes · about 20 registrants we index

Toole County1 ZIP code · about 15 registrants we index

Valley County1 ZIP code · about 32 registrants we index

Wheatland County1 ZIP code · about 6 registrants we index

Yellowstone County sex offender registry7 ZIP codes · about 554 registrants we index

Sex offenders near your Montana address: a ZIP-wide figure is not your street. How many live near your address?

Enter your address and you will see how many live near it.

Free. Next: a free account, then your count. No card.We don’t share your address or tell anyone you looked.

Checking a person instead? A Background Check is paid once — name plus where they live or work, across 58 registries and criminal records.Run a Background Check

Free: the count near your address. Optional: see everyone near it with one paid check, or watch it with Family Watch — what it costs is just below.

Public registry information. It may not be used for employment, tenant, credit or insurance decisions, or to harass or threaten anyone.

How to read Montana sex offender counts by ZIP code. Four things to know before comparing two Montana ZIPs.

01A ZIP code is a mail-delivery area, not a boundary a registry uses. One ZIP can cross city and county lines, and a Montana address may be filed under a neighboring town’s name — so each ZIP is counted by the ZIP on the address, and the city and county pages count their own boundaries. The two will not add up exactly, and that is expected.
02The count is the registrants we index with that ZIP as of October 2026, rounded and approximate — not an official figure. It moves continuously as people are added, move, or are released from the requirement. Treat it as scale; for a specific person, run a search.
03The rate divides that count by the ZIP’s residents (ACS 2019-2023 5-year estimate), per 10,000. A small ZIP with a prison, a hospital or a shelter can carry a high rate on a handful of people, and a rate is shown only where the count is large enough to mean something. The Montana average is about 62.1 per 10,000.
04A ZIP is listed when we index at least 5 registrants with it and it has at least 1,000 residents. A Montana ZIP that is not on this page is not a ZIP with nobody registered — enter an address in it and the count near that address is free.

Montana sex offenders by ZIP code FAQ. Quick answers before you open a ZIP.

Which Montana ZIP code has the most registered sex offenders?

Of the 98 Montana ZIP codes we publish, 59601 (Helena) has the most registrants we index, about 376 (Lewis and Clark County). By rate, 59601 (Helena) is highest at about 118.2 per 10,000 residents. Large ZIPs usually have large counts, so the per-10,000 figure beside each ZIP is the fairer comparison.

How many Montana ZIP codes are on this sex offender list?

98, holding about 4,175 registrants we index between them, across 42 counties. A ZIP is listed when we index at least 5 registrants with that ZIP and it has at least 1,000 residents. A ZIP that is not listed is not a ZIP with nobody registered — search from an address in it for the current picture.

Is there an official Montana sex offender list by ZIP code?

Registries are kept by the state, not by ZIP code, so Montana publishes no official list by ZIP. This page counts the registrants we index whose address carries each ZIP, as of October 2026, rounded and approximate. A search from any Montana address shows who is registered around it, each record linking to its official registry entry.

How do I find sex offenders near my Montana address?

Open your ZIP code's page, or enter a street address in Montana and create a free account to see how many registered sex offenders live near it. To see everyone near it — names, photographs, offenses and exact addresses — it is paid once, or Family Watch for 3 addresses with an email when someone moves in or out. Checking a person instead? A Background Check is paid once — name plus where they live or work, across 58 registries and criminal records.

Check your own Montana address for registered sex offenders

The count of registered sex offenders near your address is free.

Free. Next: a free account, then your count. No card.We don’t share your address or tell anyone you looked.

Checking a person instead? A Background Check is paid once — name plus where they live or work, across 58 registries and criminal records.Run a Background Check

Free: the count near your address. Optional: see everyone near it with one paid check, or watch it with Family Watch — what it costs is just below.

Public registry information. It may not be used for employment, tenant, credit or insurance decisions, or to harass or threaten anyone.

Sex offenders in Montana: the state page and more. The Montana registry, its statistics and how to search it.

Montana sex offender registryMontana sex offender statisticsHow to search sex offenders in MontanaMontana trick-or-treat safetySex offenders near meSex offender mapFamily Watch: an email when someone moves in

Sex offenders in Montana cities. 2 Montana city pages, each with its own count and map.

Missoula sex offendersBozeman sex offenders

Search sex offenders in any Montana ZIP code — and everywhere else — right now

See how many registered sex offenders live near your address — free, no card. Checking a person instead? A Background Check is paid once — name plus where they live or work, across 58 registries and criminal records.

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