Islam shapes the structure of time and social interaction across Senegal more thoroughly than in most West African nations. Approximately 95 percent of Senegal's population identifies as Muslim according to the 2013 census conducted by the Agence Nationale de la Statistique et de la Démographie. The remaining population divides between Christianity at roughly 4 percent and traditional African religions at 1 percent. These figures have remained stable across three national censuses spanning 1988 to 2013. The French colonial administration conducted surveys from 1904 onward showing Muslim proportion increasing from approximately 80 percent at the turn of the twentieth century to current levels. This numerical dominance translates into visible religious infrastructure. Dakar contains more than 400 mosques according to municipal records from 2019. The city of Touba functions entirely as a religious center governed by the Mouride brotherhood rather than state authorities. Saint-Louis maintains 47 mosques documented in a 2018 urban planning survey. The Great Mosque of Touba measures 87 meters tall at its central minaret, constructed between 1963 and 2019 in phases. This structure accommodates approximately 20,000 worshippers during ordinary Friday prayers and several hundred thousand during the annual Magal pilgrimage.
The Senegalese practice of Islam operates through brotherhood structures called turuq in Arabic or confréries in French. Four major brotherhoods organize religious life. The Tijaniyya represents approximately 46 percent of Muslims according to research published by the Pew Research Center in 2010. The Mouride brotherhood claims roughly 30 percent. The Qadiriyya accounts for about 10 percent. The Layene brotherhood, unique to Senegal and founded in 1883 by Seydina Limamou Laye in the Yoff neighborhood of Dakar, represents approximately 2 percent. These percentages derive from survey work conducted by Senegalese sociologist Cheikh Anta Babou and published in his 2007 book "Fighting the Greater Jihad: Amadu Bamba and the Founding of the Muridiyya of Senegal." Each brotherhood maintains distinct liturgical practices while adhering to Sunni Islam of the Maliki school. The brotherhoods emerged during the nineteenth century as organizational responses to French colonial pressure. Cheikh Ahmadou Bamba founded the Mouride brotherhood in 1883 in the Baol region. El Hadj Malick Sy established the dominant Tijani branch in Senegal in Tivaouane around 1902. These founders created hierarchical structures with hereditary leadership that persist into current practice.
Daily prayer times structure work schedules and commercial activity across urban and rural settings. The dawn prayer called Fajr occurs approximately 5:30 AM during most of the year in Dakar, with seasonal variation between 5:15 AM and 5:50 AM. Dhuhr prayer at midday happens around 1:00 PM. Asr prayer in late afternoon occurs near 4:30 PM. Maghrib prayer immediately after sunset ranges from 6:45 PM to 7:15 PM depending on season. Isha prayer approximately 90 minutes after sunset falls around 8:00 PM to 8:30 PM. Government offices in Dakar close for 30 minutes during Dhuhr prayer on Fridays. The Senegalese labor code enacted in 1997 and amended in 2018 mandates that employers must allow Muslim workers time for midday prayer without loss of wages. Stores in Medina neighborhood of Dakar close during each prayer time for periods ranging from 15 to 45 minutes based on observation studies conducted by anthropologist Leonardo Villalón in 1995. Markets in Touba cease all commercial activity during prayer times, with enforcement by religious authorities rather than police. Traffic in central Dakar measurably decreases during prayer times according to transportation studies conducted by the Dakar Urban Transport Council in 2017.
Friday holds special status as the weekly congregational prayer day. Government offices operate half-day schedules on Fridays, closing at 1:00 PM to allow attendance at Jumu'ah prayer. Schools dismiss students at noon. The Grand Mosque of Dakar on Allées Papa Gueye Fall conducts multiple Friday prayer sessions at 1:00 PM, 1:45 PM, and 2:30 PM to accommodate the approximately 15,000 attendees documented in mosque records from 2020. Imam Mouhammedou Abdoulaye Cissé delivers the Friday sermon in Arabic with Wolof translation. Major mosques in Thiès, Kaolack, and Saint-Louis follow similar multi-session patterns. Businesses typically close from noon until 3:00 PM on Fridays. Construction sites halt work during this window. The Port of Dakar reduces operations to essential services only on Friday afternoons according to port authority regulations published in 2016. This weekly rhythm has remained consistent since independence in 1960, predating current practice in many Muslim-majority nations.
The Islamic calendar determines major religious observances that override secular scheduling. Ramadan fasting affects daily routines for the approximately 85 percent of Muslims who observe the full month according to survey data collected by the Institut Fondamental d'Afrique Noire in 2015. Restaurants in Dakar that normally serve lunch close or operate at drastically reduced capacity during daylight hours in Ramadan. The Senegalese government announced in 2019 that civil servants could reduce their working hours to six hours daily during Ramadan. Iftar, the meal breaking the fast at sunset, occurs communally. Mosques distribute food to those unable to afford iftar meals. The Grand Mosque of Touba provides iftar for approximately 5,000 people daily during Ramadan according to Mouride brotherhood financial records. Tabaski, the Eid al-Adha festival, involves animal sacrifice by households with financial means. Dakar's municipal slaughterhouse processed 48,000 sheep during Tabaski in 2019 according to veterinary service reports. Neighborhoods organize communal prayers in open spaces. The Gamou, celebrating the birth of Prophet Muhammad, draws approximately two million pilgrims to Tivaouane annually according to crowd estimates by Senegalese security services in 2018. The Magal of Touba commemorating Cheikh Ahmadou Bamba's return from exile attracts between three and five million visitors each year to a city with permanent population of approximately 800,000 residents.
Marabouts serve as spiritual guides within the brotherhood system. These religious leaders provide counsel on personal decisions, business ventures, marriages, and conflicts. The marabout relationship typically follows family lines across generations. Disciples called talibes maintain economic relationships with their marabouts through agricultural work on marabout-owned lands or through financial contributions. The Mouride brotherhood operates a distinctive agricultural system where talibes work peanut farms controlled by marabouts. Studies by economist Donal Cruise O'Brien published in 1971 documented this system in detail. Marabouts in Touba control an estimated 40 percent of Senegal's peanut production according to agricultural ministry data from 2016. Urban talibes make monthly financial contributions to their marabouts. Research by political scientist Christian Coulon in 1981 estimated these contributions range from 5 to 20 percent of a talibe's income. Marabouts exercise political influence through their ability to deliver votes from their followers. Presidential candidates make formal visits to senior marabouts in Touba, Tivaouane, and Kaolack before elections. President Macky Sall visited Touba in January 2012 before the election he subsequently won. President Abdoulaye Wade made annual pilgrimages to Touba throughout his 2000-2012 tenure.
Christianity maintains visible presence despite small numerical proportion. The Roman Catholic Archdiocese of Dakar administers 19 parishes in the capital region according to ecclesiastical records from 2020. The Dakar Cathedral on Rue Assane Ndoye opened in 1929 and seats approximately 2,000 people. Sunday Mass occurs at 7:00 AM, 9:00 AM, 11:00 AM, and 6:00 PM. The 9:00 AM Mass conducts liturgy in French while the 11:00 AM service uses Wolof. Protestant denominations include evangelical churches that have grown since the 1990s. The Assemblies of God operates 43 churches in Senegal according to their 2018 directory. Korean Presbyterian missionaries established churches in Dakar beginning in 1995. Christian populations concentrate in Dakar and Ziguinchor.