Speech users and low vision users click here for help on using this Web siteSkip to main content
 Incidence Rates Report
National Cancer Institute State Cancer Profiles Centers for Disease Control and Prevention
Send to Printer   |   Close Window
Incidence Rate Report for Montana by County

All Races (includes Hispanic), Female, Breast, All Ages
Sorted by Name
Explanation of Column Headers

Incidence Rate (95% Confidence Interval) - The incidence rate is based upon 100,000 people and is an annual rate (or average annual rate) based on the time period indicated. Rates are age-adjusted by 5-year age groups to the 2000 U.S. standard million population.

Other Notes

  • Larger confidence intervals indicate less stability of the data. This is often due to low counts that are not quite low enough to be suppressed.
  • Data is currently being suppressed if there are fewer than 16 counts for the time period.


    Line by Line Interpretation of the Report

  • Montana6
  • Rate - The incidence rate is 123.0 with a 95% confidence interval from 118.9 to 127.2.
  • Average Annual Count - The count is 702.
  • Rate Period - The period for the rate is 2005-2009.
  • US (SEER+NPCR)1
  • Rate - The incidence rate is 122.0 with a 95% confidence interval from 121.8 to 122.2.
  • Average Annual Count - §
  • Rate Period - The period for the rate is 2005-2009.
  • Beaverhead County6
  • Rate - The incidence rate is 127.1 with a 95% confidence interval from 86.4 to 182.1.
  • Average Annual Count - The count is 7.
  • Rate Period - The period for the rate is 2005-2009.
  • Big Horn County6
  • Rate - The incidence rate is 105.4 with a 95% confidence interval from 71.3 to 149.9.
  • Average Annual Count - The count is 6.
  • Rate Period - The period for the rate is 2005-2009.
  • Blaine County6
  • Rate - The incidence rate is 118.6 with a 95% confidence interval from 73.5 to 182.0.
  • Average Annual Count - The count is 4.
  • Rate Period - The period for the rate is 2005-2009.
  • Broadwater County6
  • Rate - The incidence rate is 118.8 with a 95% confidence interval from 72.6 to 190.6.
  • Average Annual Count - The count is 4.
  • Rate Period - The period for the rate is 2005-2009.
  • Carbon County6
  • Rate - The incidence rate is 93.6 with a 95% confidence interval from 63.2 to 135.8.
  • Average Annual Count - The count is 6.
  • Rate Period - The period for the rate is 2005-2009.
  • Carter County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Cascade County6
  • Rate - The incidence rate is 123.7 with a 95% confidence interval from 110.2 to 138.5.
  • Average Annual Count - The count is 63.
  • Rate Period - The period for the rate is 2005-2009.
  • Chouteau County6
  • Rate - The incidence rate is 146.6 with a 95% confidence interval from 95.8 to 219.5.
  • Average Annual Count - The count is 6.
  • Rate Period - The period for the rate is 2005-2009.
  • Custer County6
  • Rate - The incidence rate is 119.4 with a 95% confidence interval from 85.8 to 162.7.
  • Average Annual Count - The count is 9.
  • Rate Period - The period for the rate is 2005-2009.
  • Daniels County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Dawson County6
  • Rate - The incidence rate is 167.5 with a 95% confidence interval from 121.9 to 225.8.
  • Average Annual Count - The count is 10.
  • Rate Period - The period for the rate is 2005-2009.
  • Deer Lodge County6
  • Rate - The incidence rate is 89.3 with a 95% confidence interval from 58.3 to 133.3.
  • Average Annual Count - The count is 6.
  • Rate Period - The period for the rate is 2005-2009.
  • Fallon County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Fergus County6
  • Rate - The incidence rate is 113.4 with a 95% confidence interval from 82.6 to 153.9.
  • Average Annual Count - The count is 10.
  • Rate Period - The period for the rate is 2005-2009.
  • Flathead County6
  • Rate - The incidence rate is 134.5 with a 95% confidence interval from 120.5 to 149.8.
  • Average Annual Count - The count is 70.
  • Rate Period - The period for the rate is 2005-2009.
  • Gallatin County6
  • Rate - The incidence rate is 143.7 with a 95% confidence interval from 126.5 to 162.5.
  • Average Annual Count - The count is 53.
  • Rate Period - The period for the rate is 2005-2009.
  • Garfield County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Glacier County6
  • Rate - The incidence rate is 139.5 with a 95% confidence interval from 101.3 to 187.1.
  • Average Annual Count - The count is 9.
  • Rate Period - The period for the rate is 2005-2009.
  • Golden Valley County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Granite County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Hill County6
  • Rate - The incidence rate is 85.5 with a 95% confidence interval from 60.1 to 118.1.
  • Average Annual Count - The count is 8.
  • Rate Period - The period for the rate is 2005-2009.
  • Jefferson County6
  • Rate - The incidence rate is 101.7 with a 95% confidence interval from 68.2 to 147.4.
  • Average Annual Count - The count is 7.
  • Rate Period - The period for the rate is 2005-2009.
  • Judith Basin County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Lake County6
  • Rate - The incidence rate is 133.0 with a 95% confidence interval from 108.9 to 160.9.
  • Average Annual Count - The count is 23.
  • Rate Period - The period for the rate is 2005-2009.
  • Lewis and Clark County6
  • Rate - The incidence rate is 129.5 with a 95% confidence interval from 113.0 to 147.9.
  • Average Annual Count - The count is 46.
  • Rate Period - The period for the rate is 2005-2009.
  • Liberty County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Lincoln County6
  • Rate - The incidence rate is 117.9 with a 95% confidence interval from 93.5 to 148.0.
  • Average Annual Count - The count is 17.
  • Rate Period - The period for the rate is 2005-2009.
  • Madison County6
  • Rate - The incidence rate is 94.4 with a 95% confidence interval from 59.3 to 146.6.
  • Average Annual Count - The count is 5.
  • Rate Period - The period for the rate is 2005-2009.
  • McCone County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Meagher County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Mineral County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Missoula County6
  • Rate - The incidence rate is 129.1 with a 95% confidence interval from 115.5 to 144.0.
  • Average Annual Count - The count is 67.
  • Rate Period - The period for the rate is 2005-2009.
  • Musselshell County6
  • Rate - The incidence rate is 94.8 with a 95% confidence interval from 52.5 to 163.8.
  • Average Annual Count - The count is 3.
  • Rate Period - The period for the rate is 2005-2009.
  • Park County6
  • Rate - The incidence rate is 128.2 with a 95% confidence interval from 98.7 to 164.4.
  • Average Annual Count - The count is 13.
  • Rate Period - The period for the rate is 2005-2009.
  • Petroleum County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Phillips County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Pondera County6
  • Rate - The incidence rate is 136.2 with a 95% confidence interval from 88.2 to 203.7.
  • Average Annual Count - The count is 5.
  • Rate Period - The period for the rate is 2005-2009.
  • Powder River County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Powell County6
  • Rate - The incidence rate is 116.5 with a 95% confidence interval from 73.4 to 179.9.
  • Average Annual Count - The count is 5.
  • Rate Period - The period for the rate is 2005-2009.
  • Prairie County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Ravalli County6
  • Rate - The incidence rate is 116.6 with a 95% confidence interval from 98.8 to 137.1.
  • Average Annual Count - The count is 32.
  • Rate Period - The period for the rate is 2005-2009.
  • Richland County6
  • Rate - The incidence rate is 127.5 with a 95% confidence interval from 89.4 to 177.7.
  • Average Annual Count - The count is 8.
  • Rate Period - The period for the rate is 2005-2009.
  • Roosevelt County6
  • Rate - The incidence rate is 142.1 with a 95% confidence interval from 100.1 to 196.1.
  • Average Annual Count - The count is 8.
  • Rate Period - The period for the rate is 2005-2009.
  • Rosebud County6
  • Rate - The incidence rate is 154.9 with a 95% confidence interval from 106.6 to 217.6.
  • Average Annual Count - The count is 7.
  • Rate Period - The period for the rate is 2005-2009.
  • Sanders County6
  • Rate - The incidence rate is 124.3 with a 95% confidence interval from 90.8 to 168.1.
  • Average Annual Count - The count is 10.
  • Rate Period - The period for the rate is 2005-2009.
  • Sheridan County6
  • Rate - The incidence rate is 107.6 with a 95% confidence interval from 62.7 to 192.8.
  • Average Annual Count - The count is 4.
  • Rate Period - The period for the rate is 2005-2009.
  • Silver Bow County6
  • Rate - The incidence rate is 107.7 with a 95% confidence interval from 88.7 to 130.0.
  • Average Annual Count - The count is 24.
  • Rate Period - The period for the rate is 2005-2009.
  • Stillwater County6
  • Rate - The incidence rate is 128.5 with a 95% confidence interval from 88.9 to 181.6.
  • Average Annual Count - The count is 7.
  • Rate Period - The period for the rate is 2005-2009.
  • Sweet Grass County6
  • Rate - The incidence rate is 133.9 with a 95% confidence interval from 78.5 to 220.4.
  • Average Annual Count - The count is 4.
  • Rate Period - The period for the rate is 2005-2009.
  • Teton County6
  • Rate - The incidence rate is 114.0 with a 95% confidence interval from 73.3 to 174.3.
  • Average Annual Count - The count is 5.
  • Rate Period - The period for the rate is 2005-2009.
  • Toole County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Treasure County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Valley County6
  • Rate - The incidence rate is 127.9 with a 95% confidence interval from 86.4 to 186.1.
  • Average Annual Count - The count is 7.
  • Rate Period - The period for the rate is 2005-2009.
  • Wheatland County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Wibaux County6
  • Rate - *
  • Average Annual Count - *
  • Rate Period - *
  • Yellowstone County6
  • Rate - The incidence rate is 116.4 with a 95% confidence interval from 106.1 to 127.4.
  • Average Annual Count - The count is 97.
  • Rate Period - The period for the rate is 2005-2009.


  • Notes:
    Created by statecancerprofiles.cancer.gov on 05/23/2013 6:15 pm.
    State Cancer Registries may provide more current or more local data.
    † Incidence rates (cases per 100,000 population per year) are age-adjusted to the 2000 US standard population (19 age groups: <1, 1-4, 5-9, ... , 80-84, 85+). Rates are for invasive cancer only (except for bladder cancer which is invasive and in situ) or unless otherwise specified. Rates calculated using SEER*Stat. Population counts for denominators are based on Census populations as modified by NCI. The US populations included with the data release have been adjusted for the population shifts due to hurricanes Katrina and Rita for 62 counties and parishes in Alabama, Mississippi, Louisiana, and Texas. The 1969-2009 US Population Data File is used for SEER and NPCR incidence rates.
    § Because of the impact on Louisiana's population for the July - December 2005 time period due to Hurricanes Katrina/Rita, SEER excluded Louisiana cases diagnosed for that six month time period. The count has been suppressed due to data consistency issues.
    * Data has been suppressed to ensure confidentiality and stability of rate estimates. Counts are suppressed if fewer than 16 cases were reported in a specific area-sex-race category.

    1 Source: CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) January 2012 data submission and SEER November 2011 submission.
    6 Source: State Cancer Registry and the CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) January 2012 data submission. State rates include rates from metropolitan areas funded by SEER.

    Interpret Rankings provides insight into interpreting cancer incidence statistics. When the population size for a denominator is small, the rates may be unstable. A rate is unstable when a small change in the numerator (e.g., only one or two additional cases) has a dramatic effect on the calculated rate.

    Suppression is used to avoid misinterpretation when rates are unstable.